{"id":31015,"date":"2026-09-15T08:44:26","date_gmt":"2026-09-15T00:44:26","guid":{"rendered":"https:\/\/www.cnspd.com\/?p=31015"},"modified":"2026-09-15T08:57:15","modified_gmt":"2026-09-15T00:57:15","slug":"automatic-transfer-switch-manufacturer-for-oem-distribution-projects","status":"publish","type":"post","link":"https:\/\/www.cnspd.com\/th\/automatic-transfer-switch-manufacturer\/","title":{"rendered":"\u0e1c\u0e39\u0e49\u0e1c\u0e25\u0e34\u0e15\u0e2a\u0e27\u0e34\u0e15\u0e0a\u0e4c\u0e42\u0e2d\u0e19\u0e2d\u0e31\u0e15\u0e42\u0e19\u0e21\u0e31\u0e15\u0e34\u0e2a\u0e33\u0e2b\u0e23\u0e31\u0e1a\u0e42\u0e04\u0e23\u0e07\u0e01\u0e32\u0e23 OEM \u0e41\u0e25\u0e30\u0e42\u0e04\u0e23\u0e07\u0e01\u0e32\u0e23\u0e08\u0e31\u0e14\u0e08\u0e33\u0e2b\u0e19\u0e48\u0e32\u0e22"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"31015\" class=\"elementor elementor-31015\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6495912 e-flex e-con-boxed e-con e-parent\" data-id=\"6495912\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6f77e07 elementor-widget elementor-widget-html\" data-id=\"6f77e07\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<style>\r\n.leeyee-ats-mfg{\r\n  --blue:#004898;\r\n  --blue-dark:#00386f;\r\n  --blue-hover:#003b7c;\r\n  --blue-soft:#eef5ff;\r\n  --blue-soft-2:#f7fbff;\r\n  --text:#27313b;\r\n  --heading:#172635;\r\n  --muted:#64717d;\r\n  --line:#dbe5ee;\r\n  --warn:#845300;\r\n  --warn-bg:#fff8e8;\r\n  --ok:#176b45;\r\n  --ok-bg:#eef9f3;\r\n  max-width:860px;\r\n  margin:0 auto;\r\n  color:var(--text);\r\n  font-family:inherit;\r\n  font-size:17px;\r\n  line-height:1.72;\r\n  overflow-wrap:anywhere;\r\n}\r\n\r\n.leeyee-ats-mfg *{\r\n  box-sizing:border-box;\r\n}\r\n\r\n.leeyee-ats-mfg p{\r\n  margin:0 0 1.05em;\r\n}\r\n\r\n.leeyee-ats-mfg a:not(.leeyee-site-popup-btn){\r\n  color:var(--blue);\r\n  text-decoration-thickness:1px;\r\n  text-underline-offset:2px;\r\n}\r\n\r\n.leeyee-ats-mfg h2{\r\n  margin:2.15em 0 .72em;\r\n  color:var(--heading);\r\n  font-size:clamp(28px,3.2vw,34px);\r\n  line-height:1.2;\r\n  letter-spacing:-.015em;\r\n}\r\n\r\n.leeyee-ats-mfg h3{\r\n  margin:1.55em 0 .55em;\r\n  color:#1b2d3d;\r\n  font-size:clamp(22px,2.6vw,26px);\r\n  line-height:1.28;\r\n}\r\n\r\n.leeyee-ats-mfg ul,\r\n.leeyee-ats-mfg ol{\r\n  margin:.5em 0 1.2em;\r\n  padding-left:1.28em;\r\n}\r\n\r\n.leeyee-ats-mfg li{\r\n  margin:.38em 0;\r\n}\r\n\r\n.leeyee-ats-mfg strong{\r\n  color:#172432;\r\n}\r\n\r\n.leeyee-ats-mfg .eyebrow{\r\n  display:inline-block;\r\n  margin:0 0 .7rem;\r\n  color:var(--blue);\r\n  font-weight:700;\r\n  font-size:.78rem;\r\n  line-height:1.3;\r\n  letter-spacing:.08em;\r\n  text-transform:uppercase;\r\n}\r\n\r\n.leeyee-ats-mfg .intro{\r\n  margin-bottom:1.1rem;\r\n  color:#344250;\r\n  font-size:1.08em;\r\n}\r\n\r\n.leeyee-ats-mfg .quick-answer{\r\n  margin:1.25rem 0 1.5rem;\r\n  padding:1.2rem 1.3rem;\r\n  background:var(--blue-soft-2);\r\n  border-left:4px solid var(--blue);\r\n  border-radius:8px;\r\n}\r\n\r\n.leeyee-ats-mfg .quick-answer h2{\r\n  margin:0 0 .58rem;\r\n  font-size:1.48rem;\r\n}\r\n\r\n.leeyee-ats-mfg .scope-strip{\r\n  display:grid;\r\n  grid-template-columns:repeat(3,minmax(0,1fr));\r\n  gap:10px;\r\n  margin:1.15rem 0;\r\n}\r\n\r\n.leeyee-ats-mfg .scope-item{\r\n  padding:.86rem .9rem;\r\n  background:#fff;\r\n  border:1px solid var(--line);\r\n  border-radius:8px;\r\n}\r\n\r\n.leeyee-ats-mfg .scope-item b{\r\n  display:block;\r\n  margin-bottom:.1rem;\r\n  color:var(--blue);\r\n  font-size:1.04em;\r\n}\r\n\r\n.leeyee-ats-mfg .scope-item span{\r\n  display:block;\r\n  color:var(--muted);\r\n  font-size:.9em;\r\n  line-height:1.45;\r\n}\r\n\r\n.leeyee-ats-mfg .boundary{\r\n  margin:1rem 0;\r\n  padding:.95rem 1rem;\r\n  color:#5d481e;\r\n  background:var(--warn-bg);\r\n  border:1px solid #ecd7ab;\r\n  border-radius:8px;\r\n}\r\n\r\n.leeyee-ats-mfg .boundary strong{\r\n  color:#704700;\r\n}\r\n\r\n.leeyee-ats-mfg .note{\r\n  margin:1rem 0;\r\n  padding:.95rem 1rem;\r\n  background:var(--blue-soft);\r\n  border:1px solid #cfe0f2;\r\n  border-radius:8px;\r\n}\r\n\r\n.leeyee-ats-mfg .buyer-meaning{\r\n  margin:.9rem 0 1.25rem;\r\n  padding:.82rem 1rem;\r\n  color:#334454;\r\n  background:#fafcff;\r\n  border-left:3px solid var(--blue);\r\n}\r\n\r\n.leeyee-ats-mfg .evidence-note{\r\n  margin:1rem 0;\r\n  padding:.9rem 1rem;\r\n  background:var(--ok-bg);\r\n  border-left:3px solid var(--ok);\r\n  border-radius:6px;\r\n}\r\n\r\n.leeyee-ats-mfg .figure{\r\n  margin:1.45rem 0 1.75rem;\r\n}\r\n\r\n.leeyee-ats-mfg .figure img{\r\n  display:block;\r\n  width:100%;\r\n  height:auto;\r\n  background:#fff;\r\n  border:1px solid #e1e8ef;\r\n  border-radius:9px;\r\n}\r\n\r\n.leeyee-ats-mfg .figure figcaption{\r\n  margin:.55rem .2rem 0;\r\n  color:var(--muted);\r\n  font-size:.86rem;\r\n  line-height:1.5;\r\n}\r\n\r\n.leeyee-ats-mfg .table-wrap{\r\n  width:100%;\r\n  margin:1.1rem 0 1.45rem;\r\n}\r\n\r\n.leeyee-ats-mfg table{\r\n  width:100%;\r\n  border-collapse:separate;\r\n  border-spacing:0;\r\n  overflow:hidden;\r\n  background:#fff;\r\n  border:1px solid var(--line);\r\n  border-radius:8px;\r\n  font-size:.94rem;\r\n  line-height:1.5;\r\n}\r\n\r\n.leeyee-ats-mfg th{\r\n  padding:.78rem .8rem;\r\n  color:#fff;\r\n  background:var(--blue);\r\n  font-weight:700;\r\n  text-align:left;\r\n  vertical-align:top;\r\n}\r\n\r\n.leeyee-ats-mfg td{\r\n  padding:.75rem .8rem;\r\n  border-top:1px solid var(--line);\r\n  vertical-align:top;\r\n}\r\n\r\n.leeyee-ats-mfg tbody tr:first-child td{\r\n  border-top:none;\r\n}\r\n\r\n.leeyee-ats-mfg tbody tr:nth-child(even) td{\r\n  background:#fbfdff;\r\n}\r\n\r\n.leeyee-ats-mfg .status-ok{\r\n  color:var(--ok);\r\n  font-weight:700;\r\n}\r\n\r\n.leeyee-ats-mfg .status-check{\r\n  color:var(--warn);\r\n  font-weight:700;\r\n}\r\n\r\n.leeyee-ats-mfg .steps{\r\n  counter-reset:step;\r\n  display:grid;\r\n  gap:.75rem;\r\n  margin:1rem 0 1.35rem;\r\n}\r\n\r\n.leeyee-ats-mfg .step{\r\n  position:relative;\r\n  padding:.92rem 1rem .92rem 3.55rem;\r\n  background:#fff;\r\n  border:1px solid var(--line);\r\n  border-radius:8px;\r\n}\r\n\r\n.leeyee-ats-mfg .step:before{\r\n  counter-increment:step;\r\n  content:counter(step);\r\n  position:absolute;\r\n  top:.94rem;\r\n  left:1rem;\r\n  display:grid;\r\n  place-items:center;\r\n  width:1.8rem;\r\n  height:1.8rem;\r\n  color:#fff;\r\n  background:var(--blue);\r\n  border-radius:50%;\r\n  font-size:.88rem;\r\n  font-weight:700;\r\n}\r\n\r\n.leeyee-ats-mfg .step strong{\r\n  display:block;\r\n  margin-bottom:.12rem;\r\n}\r\n\r\n.leeyee-ats-mfg .check-grid,\r\n.leeyee-ats-mfg .proof-grid{\r\n  display:grid;\r\n  grid-template-columns:repeat(2,minmax(0,1fr));\r\n  gap:10px;\r\n  margin:1rem 0 1.35rem;\r\n}\r\n\r\n.leeyee-ats-mfg .check-card,\r\n.leeyee-ats-mfg .proof-card{\r\n  padding:.92rem 1rem;\r\n  background:#fff;\r\n  border:1px solid var(--line);\r\n  border-radius:8px;\r\n}\r\n\r\n.leeyee-ats-mfg .check-card strong,\r\n.leeyee-ats-mfg .proof-card strong{\r\n  display:block;\r\n  margin-bottom:.22rem;\r\n  color:var(--blue);\r\n}\r\n\r\n.leeyee-ats-mfg .check-card p,\r\n.leeyee-ats-mfg .proof-card p{\r\n  margin:0;\r\n  color:#4d5c69;\r\n  font-size:.93rem;\r\n  line-height:1.55;\r\n}\r\n\r\n.leeyee-ats-mfg .fit-box{\r\n  margin:1.15rem 0;\r\n  padding:1rem 1.05rem;\r\n  background:#fff;\r\n  border:1px solid var(--line);\r\n  border-top:3px solid var(--blue);\r\n  border-radius:8px;\r\n}\r\n\r\n.leeyee-ats-mfg .fit-box p:last-child{\r\n  margin-bottom:0;\r\n}\r\n\r\n.leeyee-ats-mfg .cta{\r\n  margin:1.4rem 0 1.8rem;\r\n  padding:1.2rem 1.25rem;\r\n  background:linear-gradient(180deg,#f4f9ff 0%,#eaf3fd 100%);\r\n  border:1px solid #c7daed;\r\n  border-radius:10px;\r\n}\r\n\r\n.leeyee-ats-mfg .cta p:last-of-type{\r\n  margin-bottom:1rem;\r\n}\r\n\r\n\/* Popup CTA button *\/\r\n.leeyee-ats-mfg .leeyee-about-btn-light{\r\n  appearance:none;\r\n  -webkit-appearance:none;\r\n  display:inline-flex;\r\n  align-items:center;\r\n  justify-content:center;\r\n  min-height:46px;\r\n  padding:12px 22px;\r\n  margin:0;\r\n  border:1.5px solid var(--blue);\r\n  border-radius:7px;\r\n  background:var(--blue);\r\n  color:#fff;\r\n  font-family:inherit;\r\n  font-size:15.5px;\r\n  font-weight:700;\r\n  line-height:1.2;\r\n  letter-spacing:.01em;\r\n  text-align:center;\r\n  text-decoration:none;\r\n  cursor:pointer;\r\n  box-shadow:0 5px 14px rgba(0,72,152,.14);\r\n  transition:\r\n    background-color .2s ease,\r\n    border-color .2s ease,\r\n    color .2s ease,\r\n    transform .2s ease,\r\n    box-shadow .2s ease;\r\n}\r\n\r\n.leeyee-ats-mfg .leeyee-about-btn-light:hover{\r\n  background:var(--blue-hover);\r\n  border-color:var(--blue-hover);\r\n  color:#fff;\r\n  transform:translateY(-1px);\r\n  box-shadow:0 7px 18px rgba(0,72,152,.20);\r\n}\r\n\r\n.leeyee-ats-mfg .leeyee-about-btn-light:active{\r\n  transform:translateY(0);\r\n  box-shadow:0 3px 9px rgba(0,72,152,.16);\r\n}\r\n\r\n.leeyee-ats-mfg .leeyee-about-btn-light:focus-visible{\r\n  outline:3px solid rgba(0,72,152,.22);\r\n  outline-offset:3px;\r\n}\r\n\r\n.leeyee-ats-mfg .leeyee-about-btn-light .w-btn-label{\r\n  display:block;\r\n  color:inherit;\r\n  font:inherit;\r\n  line-height:inherit;\r\n  pointer-events:none;\r\n}\r\n\r\n.leeyee-ats-mfg .faq{\r\n  margin:1rem 0 1.5rem;\r\n  border-top:1px solid var(--line);\r\n}\r\n\r\n.leeyee-ats-mfg .faq details{\r\n  padding:.1rem 0;\r\n  border-bottom:1px solid var(--line);\r\n}\r\n\r\n.leeyee-ats-mfg .faq summary{\r\n  cursor:pointer;\r\n  padding:.9rem .1rem;\r\n  color:#1c2c3a;\r\n  font-weight:700;\r\n  line-height:1.45;\r\n}\r\n\r\n.leeyee-ats-mfg .faq details>div{\r\n  padding:0 .1rem .9rem;\r\n  color:#455563;\r\n}\r\n\r\n.leeyee-ats-mfg .faq details>div p:last-child{\r\n  margin-bottom:0;\r\n}\r\n\r\n.leeyee-ats-mfg .related{\r\n  margin:1.3rem 0 0;\r\n  padding:1rem;\r\n  background:#fff;\r\n  border:1px solid var(--line);\r\n  border-radius:8px;\r\n}\r\n\r\n.leeyee-ats-mfg .related strong{\r\n  display:block;\r\n  margin-bottom:.4rem;\r\n}\r\n\r\n.leeyee-ats-mfg .related a{\r\n  display:inline-block;\r\n  margin:.18rem .8rem .18rem 0;\r\n}\r\n\r\n.leeyee-ats-mfg .references{\r\n  margin-top:2rem;\r\n  padding-top:1rem;\r\n  color:#4f5d69;\r\n  border-top:1px solid var(--line);\r\n  font-size:.9rem;\r\n}\r\n\r\n.leeyee-ats-mfg .references li{\r\n  margin:.58rem 0;\r\n}\r\n\r\n.leeyee-ats-mfg sup a{\r\n  font-weight:700;\r\n  text-decoration:none;\r\n}\r\n\r\n@media (max-width:1024px){\r\n  .leeyee-ats-mfg{\r\n    max-width:840px;\r\n  }\r\n}\r\n\r\n@media (max-width:820px){\r\n  .leeyee-ats-mfg{\r\n    max-width:100%;\r\n    padding:0 4px;\r\n    font-size:16.5px;\r\n    line-height:1.7;\r\n  }\r\n\r\n  .leeyee-ats-mfg .scope-strip{\r\n    grid-template-columns:repeat(2,minmax(0,1fr));\r\n  }\r\n\r\n  .leeyee-ats-mfg .check-grid,\r\n  .leeyee-ats-mfg .proof-grid{\r\n    grid-template-columns:1fr;\r\n  }\r\n}\r\n\r\n@media (max-width:600px){\r\n  .leeyee-ats-mfg{\r\n    font-size:16px;\r\n  }\r\n\r\n  .leeyee-ats-mfg h2{\r\n    margin-top:1.9em;\r\n  }\r\n\r\n  .leeyee-ats-mfg .quick-answer,\r\n  .leeyee-ats-mfg .cta{\r\n    padding:1rem;\r\n  }\r\n\r\n  .leeyee-ats-mfg .scope-strip{\r\n    grid-template-columns:1fr;\r\n  }\r\n\r\n  .leeyee-ats-mfg .leeyee-about-btn-light{\r\n    width:100%;\r\n    min-height:48px;\r\n    padding:13px 18px;\r\n    font-size:15.5px;\r\n  }\r\n\r\n  .leeyee-ats-mfg table.responsive,\r\n  .leeyee-ats-mfg table.responsive tbody,\r\n  .leeyee-ats-mfg table.responsive tr,\r\n  .leeyee-ats-mfg table.responsive td{\r\n    display:block;\r\n    width:100%;\r\n  }\r\n\r\n  .leeyee-ats-mfg table.responsive thead{\r\n    display:none;\r\n  }\r\n\r\n  .leeyee-ats-mfg table.responsive{\r\n    background:transparent;\r\n    border:0;\r\n  }\r\n\r\n  .leeyee-ats-mfg table.responsive tr{\r\n    margin:0 0 .75rem;\r\n    overflow:hidden;\r\n    background:#fff;\r\n    border:1px solid var(--line);\r\n    border-radius:8px;\r\n  }\r\n\r\n  .leeyee-ats-mfg table.responsive td{\r\n    padding:.62rem .8rem;\r\n    background:#fff!important;\r\n    border-top:1px solid var(--line)!important;\r\n  }\r\n\r\n  .leeyee-ats-mfg table.responsive td:first-child{\r\n    border-top:0!important;\r\n  }\r\n\r\n  .leeyee-ats-mfg table.responsive td:before{\r\n    content:attr(data-label);\r\n    display:block;\r\n    margin-bottom:.12rem;\r\n    color:var(--blue);\r\n    font-size:.78rem;\r\n    line-height:1.3;\r\n    font-weight:700;\r\n    text-transform:uppercase;\r\n    letter-spacing:.03em;\r\n  }\r\n\r\n  .leeyee-ats-mfg .step{\r\n    padding-left:3.25rem;\r\n  }\r\n}\r\n\r\n@media (max-width:430px){\r\n  .leeyee-ats-mfg{\r\n    font-size:15.9px;\r\n  }\r\n\r\n  .leeyee-ats-mfg h2{\r\n    font-size:27px;\r\n  }\r\n\r\n  .leeyee-ats-mfg h3{\r\n    font-size:22px;\r\n  }\r\n}\r\n\r\n@media (max-width:360px){\r\n  .leeyee-ats-mfg{\r\n    font-size:15.7px;\r\n  }\r\n\r\n  .leeyee-ats-mfg .step{\r\n    padding:.85rem .82rem .85rem 3rem;\r\n  }\r\n\r\n  .leeyee-ats-mfg .step:before{\r\n    left:.78rem;\r\n  }\r\n}\r\n<\/style>\r\n\r\n<article class=\"leeyee-ats-mfg\" id=\"leeyee-automatic-transfer-switch-manufacturer\">\r\n\r\n  <span class=\"eyebrow\">B2B Automatic Transfer Switch Sourcing &amp; OEM Guide<\/span>\r\n\r\n  <p class=\"intro\">If you are looking for an <strong>automatic transfer switch manufacturer<\/strong>, ATS factory or long-term ATS supplier, the first question is not simply who can quote a transfer switch. The real procurement question is whether the supplier can match your electrical system, document the exact configuration, approve a sample and keep the approved specification consistent in bulk and repeat orders.<\/p>\r\n\r\n  <p>LEEYEE currently publishes the compact <strong>ATS-63 automatic transfer switch<\/strong> range for OEM buyers, distributors, panel builders and backup-power projects. The published range covers 6A\u201363A, 2P and 4P configurations, AC110V \/ AC220V \/ AC400V, 50\/60Hz, PC class and DIN-rail mounting.<sup><a href=\"#ref-1\">[1]<\/a><\/sup><\/p>\r\n\r\n  <section class=\"quick-answer\" aria-labelledby=\"ats-quick-answer\">\r\n    <div id=\"ez-toc-container\" class=\"ez-toc-v2_0_87 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/th\/automatic-transfer-switch-manufacturer\/#quick-answer-is-leeyee-the-right-ats-supplier-for-your-project\" >Quick Answer: Is LEEYEE the Right ATS Supplier for Your Project?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/th\/automatic-transfer-switch-manufacturer\/#current-leeyee-automatic-transfer-switch-supply-scope\" >Current LEEYEE Automatic Transfer Switch Supply Scope<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/th\/automatic-transfer-switch-manufacturer\/#which-requirements-fit-ats-63-%e2%80%94-and-which-need-separate-confirmation\" >Which Requirements Fit ATS-63 \u2014 and Which Need Separate Confirmation?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/th\/automatic-transfer-switch-manufacturer\/#what-should-an-automatic-transfer-switch-manufacturer-confirm-before-quotation\" >What Should an Automatic Transfer Switch Manufacturer Confirm Before Quotation?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/th\/automatic-transfer-switch-manufacturer\/#how-to-audit-an-ats-manufacturer-or-ats-factory\" >How to Audit an ATS Manufacturer or ATS Factory<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/th\/automatic-transfer-switch-manufacturer\/#what-can-buyers-verify-about-leeyee-ats-supply-online\" >What Can Buyers Verify About LEEYEE ATS Supply Online?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/th\/automatic-transfer-switch-manufacturer\/#ats-standards-and-documentation-buyers-should-verify-in-2026\" >ATS Standards and Documentation Buyers Should Verify in 2026<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/th\/automatic-transfer-switch-manufacturer\/#oem-automatic-transfer-switch-supply-from-requirement-to-approved-sample\" >OEM Automatic Transfer Switch Supply: From Requirement to Approved Sample<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/th\/automatic-transfer-switch-manufacturer\/#sample-approval-checklist-before-bulk-ordering\" >Sample Approval Checklist Before Bulk Ordering<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/th\/automatic-transfer-switch-manufacturer\/#how-should-batch-and-repeat-order-consistency-be-controlled\" >How Should Batch and Repeat-Order Consistency Be Controlled?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/th\/automatic-transfer-switch-manufacturer\/#where-is-a-compact-6a%e2%80%9363a-automatic-transfer-switch-a-good-fit\" >Where Is a Compact 6A\u201363A Automatic Transfer Switch a Good Fit?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/th\/automatic-transfer-switch-manufacturer\/#how-moq-bulk-pricing-and-lead-time-should-be-confirmed\" >How MOQ, Bulk Pricing and Lead Time Should Be Confirmed<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/th\/automatic-transfer-switch-manufacturer\/#ats-rfq-checklist-what-should-you-send-to-the-manufacturer\" >ATS RFQ Checklist: What Should You Send to the Manufacturer?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/th\/automatic-transfer-switch-manufacturer\/#faq-for-oem-distributor-and-project-buyers\" >FAQ for OEM, Distributor and Project Buyers<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/th\/automatic-transfer-switch-manufacturer\/#references\" >References<\/a><\/li><\/ul><\/nav><\/div>\n<h2 id=\"ats-quick-answer\"><span class=\"ez-toc-section\" id=\"quick-answer-is-leeyee-the-right-ats-supplier-for-your-project\"><\/span>Quick Answer: Is LEEYEE the Right ATS Supplier for Your Project?<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n    <p><strong>LEEYEE is currently a practical sourcing option when you need a compact 6A\u201363A, 2P or 4P, PC-class DIN-rail ATS and want to confirm the product for OEM, distribution or panel integration.<\/strong> Start with the electrical configuration, then verify the exact model, dimensions, wiring, documents and sample before approving bulk production.<\/p>\r\n\r\n    <div class=\"scope-strip\">\r\n      <div class=\"scope-item\">\r\n        <b>6A\u201363A<\/b>\r\n        <span>Published rated-current range<\/span>\r\n      <\/div>\r\n\r\n      <div class=\"scope-item\">\r\n        <b>2P \/ 4P<\/b>\r\n        <span>Published pole configurations<\/span>\r\n      <\/div>\r\n\r\n      <div class=\"scope-item\">\r\n        <b>PC Class<\/b>\r\n        <span>Published ATS-63 class<\/span>\r\n      <\/div>\r\n\r\n      <div class=\"scope-item\">\r\n        <b>110 \/ 220 \/ 400V AC<\/b>\r\n        <span>Published voltage options<\/span>\r\n      <\/div>\r\n\r\n      <div class=\"scope-item\">\r\n        <b>&lt;50 ms<\/b>\r\n        <span>Published transfer switching time<\/span>\r\n      <\/div>\r\n\r\n      <div class=\"scope-item\">\r\n        <b>DIN Rail<\/b>\r\n        <span>Compact panel installation<\/span>\r\n      <\/div>\r\n    <\/div>\r\n\r\n    <div class=\"boundary\">\r\n      <strong>Current scope boundary:<\/strong> LEEYEE\u2019s published ATS-63 information does not establish a 3P version, CB-class version, rating above 63A, closed-transition ATS or UL 1008 certification. If your project requires any of these, request written model availability and model-specific documentation before approval.\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <figure class=\"figure\">\r\n    <img fetchpriority=\"high\" src=\"https:\/\/www.cnspd.com\/wp-content\/uploads\/2026\/09\/automatic-transfer-switch-product-range-1.webp\" width=\"1448\" height=\"1086\" loading=\"eager\" fetchpriority=\"high\" decoding=\"async\" alt=\"LEEYEE compact automatic transfer switch range with 2P and 4P configurations\">\r\n    <figcaption>ATS-63 range illustration based on LEEYEE\u2019s published product data. Use the actual quotation, product label, datasheet and approved sample as the final order reference.<sup><a href=\"#ref-1\">[1]<\/a><\/sup><\/figcaption>\r\n  <\/figure>\r\n\r\n  <div class=\"cta\">\r\n    <p><strong>Already sourcing an ATS?<\/strong> Send the system voltage, load current, phase arrangement, normal source, backup source, quantity and OEM requirements. LEEYEE can first confirm whether ATS-63 falls inside the required project scope.<\/p>\r\n\r\n    <button type=\"button\" class=\"leeyee-about-btn-light leeyee-site-popup-btn\" aria-label=\"Send Your ATS Requirement\">\r\n      <span class=\"w-btn-label\">Send Your ATS Requirement<\/span>\r\n    <\/button>\r\n  <\/div>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"current-leeyee-automatic-transfer-switch-supply-scope\"><\/span>Current LEEYEE Automatic Transfer Switch Supply Scope<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <p>A manufacturer page should make the available product range easy to verify. The table below is based on the currently published ATS-63 product data rather than on a broader unverified catalogue claim.<sup><a href=\"#ref-1\">[1]<\/a><\/sup><\/p>\r\n\r\n  <div class=\"table-wrap\">\r\n    <table class=\"responsive\" aria-label=\"LEEYEE ATS-63 technical supply scope\">\r\n      <thead>\r\n        <tr>\r\n          <th>Specification<\/th>\r\n          <th>Published ATS-63 data<\/th>\r\n          <th>Buyer meaning<\/th>\r\n        <\/tr>\r\n      <\/thead>\r\n      <tbody>\r\n        <tr>\r\n          <td data-label=\"Specification\">Rated operating current<\/td>\r\n          <td data-label=\"Published data\">6 \/ 10 \/ 16 \/ 20 \/ 25 \/ 32 \/ 40 \/ 50 \/ 63A<\/td>\r\n          <td data-label=\"Buyer meaning\">Select by actual load and protection design, not only by a familiar catalogue rating<\/td>\r\n        <\/tr>\r\n\r\n        <tr>\r\n          <td data-label=\"Specification\">Rated working voltage<\/td>\r\n          <td data-label=\"Published data\">AC110V \/ AC220V \/ AC400V<\/td>\r\n          <td data-label=\"Buyer meaning\">Confirm the actual system voltage for both sources<\/td>\r\n        <\/tr>\r\n\r\n        <tr>\r\n          <td data-label=\"Specification\">Frequency<\/td>\r\n          <td data-label=\"Published data\">50\/60Hz<\/td>\r\n          <td data-label=\"Buyer meaning\">Both source conditions should match the intended ATS configuration<\/td>\r\n        <\/tr>\r\n\r\n        <tr>\r\n          <td data-label=\"Specification\">Poles<\/td>\r\n          <td data-label=\"Published data\">2P \/ 4P<\/td>\r\n          <td data-label=\"Buyer meaning\">Choose according to phase arrangement, neutral treatment and project requirements<\/td>\r\n        <\/tr>\r\n\r\n        <tr>\r\n          <td data-label=\"Specification\">Class<\/td>\r\n          <td data-label=\"Published data\">PC<\/td>\r\n          <td data-label=\"Buyer meaning\">Do not assume ATS-63 is a CB-class transfer switch<\/td>\r\n        <\/tr>\r\n\r\n        <tr>\r\n          <td data-label=\"Specification\">Utilization category<\/td>\r\n          <td data-label=\"Published data\">AC-31B<\/td>\r\n          <td data-label=\"Buyer meaning\">Check the actual connected load and duty before approval<\/td>\r\n        <\/tr>\r\n\r\n        <tr>\r\n          <td data-label=\"Specification\">Transfer switching time<\/td>\r\n          <td data-label=\"Published data\">&lt;50 ms<\/td>\r\n          <td data-label=\"Buyer meaning\">This is switch transfer time, not the complete generator-start restoration time<sup><a href=\"#ref-2\">[2]<\/a><\/sup><\/td>\r\n        <\/tr>\r\n\r\n        <tr>\r\n          <td data-label=\"Specification\">Rated short-circuit current Iq<\/td>\r\n          <td data-label=\"Published data\">5kA<\/td>\r\n          <td data-label=\"Buyer meaning\">Project short-circuit protection and coordination still require engineering review<\/td>\r\n        <\/tr>\r\n\r\n        <tr>\r\n          <td data-label=\"Specification\">Insulation \/ impulse rating<\/td>\r\n          <td data-label=\"Published data\">Ui 690V \/ Uimp 8kV<\/td>\r\n          <td data-label=\"Buyer meaning\">Use the actual datasheet values in project verification<\/td>\r\n        <\/tr>\r\n\r\n        <tr>\r\n          <td data-label=\"Specification\">Protection grade<\/td>\r\n          <td data-label=\"Published data\">IP30<\/td>\r\n          <td data-label=\"Buyer meaning\">Check the final enclosure and installation environment<\/td>\r\n        <\/tr>\r\n\r\n        <tr>\r\n          <td data-label=\"Specification\">Mounting<\/td>\r\n          <td data-label=\"Published data\">DIN-rail installation<\/td>\r\n          <td data-label=\"Buyer meaning\">Useful for compact panel integration when dimensions and terminal access fit<\/td>\r\n        <\/tr>\r\n      <\/tbody>\r\n    <\/table>\r\n  <\/div>\r\n\r\n  <div class=\"evidence-note\">\r\n    <strong>Direct verification:<\/strong> buyers can review the current ATS-63 specifications, dimensions and wiring information on the <a href=\"https:\/\/www.cnspd.com\/products\/leeyee-automatic-transfer-switch-solar-backup\/\">LEEYEE ATS-63 product page<\/a> before requesting a quotation.\r\n  <\/div>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"which-requirements-fit-ats-63-%e2%80%94-and-which-need-separate-confirmation\"><\/span>Which Requirements Fit ATS-63 \u2014 and Which Need Separate Confirmation?<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <p>For B2B sourcing, a clear limitation is more useful than an oversized product claim. Use this table as an initial qualification step, then confirm the actual project conditions.<\/p>\r\n\r\n  <div class=\"table-wrap\">\r\n    <table class=\"responsive\" aria-label=\"ATS-63 project suitability screening\">\r\n      <thead>\r\n        <tr>\r\n          <th>Your requirement<\/th>\r\n          <th>Current published position<\/th>\r\n          <th>Next action<\/th>\r\n        <\/tr>\r\n      <\/thead>\r\n      <tbody>\r\n        <tr>\r\n          <td data-label=\"Requirement\">6A\u201363A compact ATS<\/td>\r\n          <td data-label=\"Position\"><span class=\"status-ok\">Inside published ATS-63 range<\/span><\/td>\r\n          <td data-label=\"Action\">Confirm voltage, poles, load and installation<\/td>\r\n        <\/tr>\r\n\r\n        <tr>\r\n          <td data-label=\"Requirement\">Single-phase system<\/td>\r\n          <td data-label=\"Position\">2P option published<\/td>\r\n          <td data-label=\"Action\">Confirm the actual conductor and neutral switching arrangement<\/td>\r\n        <\/tr>\r\n\r\n        <tr>\r\n          <td data-label=\"Requirement\">Three-phase + neutral system<\/td>\r\n          <td data-label=\"Position\">4P option published<\/td>\r\n          <td data-label=\"Action\">Confirm neutral switching and earthing arrangement<\/td>\r\n        <\/tr>\r\n\r\n        <tr>\r\n          <td data-label=\"Requirement\">DIN-rail panel<\/td>\r\n          <td data-label=\"Position\"><span class=\"status-ok\">DIN-rail mounting published<\/span><\/td>\r\n          <td data-label=\"Action\">Check dimensions, wiring space and terminal access<\/td>\r\n        <\/tr>\r\n\r\n        <tr>\r\n          <td data-label=\"Requirement\">Utility + generator backup<\/td>\r\n          <td data-label=\"Position\">Application supported when parameters match<\/td>\r\n          <td data-label=\"Action\">Confirm generator start\/control sequence separately<\/td>\r\n        <\/tr>\r\n\r\n        <tr>\r\n          <td data-label=\"Requirement\">Utility + inverter backup<\/td>\r\n          <td data-label=\"Position\">Possible when the AC sources and system arrangement are compatible<\/td>\r\n          <td data-label=\"Action\">Confirm inverter output, voltage, frequency, neutral and transfer logic<\/td>\r\n        <\/tr>\r\n\r\n        <tr>\r\n          <td data-label=\"Requirement\">Above 63A<\/td>\r\n          <td data-label=\"Position\"><span class=\"status-check\">Outside current published ATS-63 range<\/span><\/td>\r\n          <td data-label=\"Action\">Request separate product availability confirmation<\/td>\r\n        <\/tr>\r\n\r\n        <tr>\r\n          <td data-label=\"Requirement\">3P ATS<\/td>\r\n          <td data-label=\"Position\"><span class=\"status-check\">Not currently published for ATS-63<\/span><\/td>\r\n          <td data-label=\"Action\">Do not specify without written confirmation<\/td>\r\n        <\/tr>\r\n\r\n        <tr>\r\n          <td data-label=\"Requirement\">CB-class ATS<\/td>\r\n          <td data-label=\"Position\"><span class=\"status-check\">ATS-63 is published as PC class<\/span><\/td>\r\n          <td data-label=\"Action\">Use a separately confirmed solution if CB class is required<\/td>\r\n        <\/tr>\r\n\r\n        <tr>\r\n          <td data-label=\"Requirement\">Closed transition or zero-interruption load<\/td>\r\n          <td data-label=\"Position\"><span class=\"status-check\">Not established by ATS-63 data<\/span><\/td>\r\n          <td data-label=\"Action\">Use an engineered solution designed for that requirement<\/td>\r\n        <\/tr>\r\n      <\/tbody>\r\n    <\/table>\r\n  <\/div>\r\n\r\n  <figure class=\"figure\">\r\n    <img loading=\"lazy\" src=\"https:\/\/www.cnspd.com\/wp-content\/uploads\/2026\/09\/ats-2p-4p-application-selection.webp\" width=\"1448\" height=\"1086\" loading=\"lazy\" decoding=\"async\" alt=\"2P and 4P automatic transfer switch selection for single-phase and three-phase distribution systems\">\r\n    <figcaption>2P \/ 4P selection concept. This is not a universal wiring diagram. Final pole and neutral-switching requirements depend on the actual system, earthing arrangement and applicable project rules.<\/figcaption>\r\n  <\/figure>\r\n\r\n  <div class=\"note\">\r\n    <strong>Engineering note:<\/strong> rated current alone is not enough for motors, pumps or other loads with significant starting current. LEEYEE\u2019s ATS selection guide recommends checking both running current and starting current for pump loads.<sup><a href=\"#ref-2\">[2]<\/a><\/sup>\r\n  <\/div>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"what-should-an-automatic-transfer-switch-manufacturer-confirm-before-quotation\"><\/span>What Should an Automatic Transfer Switch Manufacturer Confirm Before Quotation?<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <p>A useful ATS quotation begins with the electrical system. If a supplier quotes only from \u201cI need a 63A ATS,\u201d important conditions can remain unresolved until the sample or installation stage.<\/p>\r\n\r\n  <div class=\"check-grid\">\r\n    <div class=\"check-card\">\r\n      <strong>System voltage and frequency<\/strong>\r\n      <p>State the real operating voltage and 50\/60Hz requirement for both normal and backup sources.<\/p>\r\n    <\/div>\r\n\r\n    <div class=\"check-card\">\r\n      <strong>Load current and load type<\/strong>\r\n      <p>Provide normal current and identify motors, pumps, compressors or other significant inrush loads.<\/p>\r\n    <\/div>\r\n\r\n    <div class=\"check-card\">\r\n      <strong>Phase and pole arrangement<\/strong>\r\n      <p>State whether the system is single-phase or three-phase and how neutral must be treated.<\/p>\r\n    <\/div>\r\n\r\n    <div class=\"check-card\">\r\n      <strong>Normal and backup source<\/strong>\r\n      <p>Identify utility, generator, inverter or second AC source and the intended operating sequence.<\/p>\r\n    <\/div>\r\n\r\n    <div class=\"check-card\">\r\n      <strong>Panel constraints<\/strong>\r\n      <p>Provide available DIN-rail space, conductor access, enclosure conditions and relevant dimensional limits.<\/p>\r\n    <\/div>\r\n\r\n    <div class=\"check-card\">\r\n      <strong>Target market and documents<\/strong>\r\n      <p>State the destination market and the exact standard, certificate, report, manual or tender document required.<\/p>\r\n    <\/div>\r\n  <\/div>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"how-to-audit-an-ats-manufacturer-or-ats-factory\"><\/span>How to Audit an ATS Manufacturer or ATS Factory<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <p>Buyers comparing an <strong>ATS manufacturer in China<\/strong>, an automatic transfer switch factory or another long-term supplier should connect every commercial claim to something that can be checked. The goal is not to collect the most certificates or factory slogans; it is to know exactly what product will be approved and shipped.<\/p>\r\n\r\n  <figure class=\"figure\">\r\n    <img loading=\"lazy\" src=\"https:\/\/www.cnspd.com\/wp-content\/uploads\/2026\/09\/automatic-transfer-switch-buyer-verification.webp\" width=\"1448\" height=\"1086\" loading=\"lazy\" decoding=\"async\" alt=\"Automatic transfer switch manufacturer verification checklist for B2B buyers\">\r\n    <figcaption>Manufacturer-verification checklist. The illustration explains what buyers should verify; it is not itself factory, test or certification evidence.<\/figcaption>\r\n  <\/figure>\r\n\r\n  <div class=\"steps\">\r\n    <div class=\"step\">\r\n      <strong>Match the quotation to an identifiable model.<\/strong>\r\n      The quotation, datasheet, sample, product label and packing list should identify the same electrical configuration.\r\n    <\/div>\r\n\r\n    <div class=\"step\">\r\n      <strong>Verify the actual ratings.<\/strong>\r\n      Check rated current, voltage, frequency, poles, class, utilization category and installation conditions before discussing branding.\r\n    <\/div>\r\n\r\n    <div class=\"step\">\r\n      <strong>Request dimensions and wiring information.<\/strong>\r\n      Panel builders need enough information to confirm installation space, terminals and wiring before the enclosure design is frozen.\r\n    <\/div>\r\n\r\n    <div class=\"step\">\r\n      <strong>Verify document scope rather than certificate logos.<\/strong>\r\n      Check the manufacturer or applicant name, product\/model scope, standard edition, ratings and issuing organization where relevant.\r\n    <\/div>\r\n\r\n    <div class=\"step\">\r\n      <strong>Approve a sample or first article.<\/strong>\r\n      Use it to confirm the physical product, electrical configuration, labeling, instructions and packaging before a customized bulk order.\r\n    <\/div>\r\n\r\n    <div class=\"step\">\r\n      <strong>Define repeat-order change control.<\/strong>\r\n      Agree how specification, component, label, packaging or documentation changes will be communicated and re-approved.\r\n    <\/div>\r\n  <\/div>\r\n\r\n  <div class=\"buyer-meaning\">\r\n    <strong>Procurement meaning:<\/strong> \u201cmanufacturer\u201d should be verifiable through the product being supplied, its technical documentation, the approved sample and the controls applied to repeat orders\u2014not through marketing language alone.\r\n  <\/div>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"what-can-buyers-verify-about-leeyee-ats-supply-online\"><\/span>What Can Buyers Verify About LEEYEE ATS Supply Online?<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <p>Before sending an RFQ, buyers can already verify several parts of the current LEEYEE ATS offer through the website. This reduces the gap between a manufacturer claim and a model-specific sourcing decision.<\/p>\r\n\r\n  <div class=\"proof-grid\">\r\n    <div class=\"proof-card\">\r\n      <strong>ATS-63 technical data<\/strong>\r\n      <p>The product page publishes current, voltage, poles, frequency, class, AC-31B category, switching time, dimensions and installation conditions.<sup><a href=\"#ref-1\">[1]<\/a><\/sup><\/p>\r\n    <\/div>\r\n\r\n    <div class=\"proof-card\">\r\n      <strong>Wiring information<\/strong>\r\n      <p>The ATS-63 product page includes a wiring-diagram section so the project can be checked beyond a product photo.<sup><a href=\"#ref-1\">[1]<\/a><\/sup><\/p>\r\n    <\/div>\r\n\r\n    <div class=\"proof-card\">\r\n      <strong>Independent selection content<\/strong>\r\n      <p>LEEYEE maintains a separate ATS selection guide covering source transfer, 2P\/4P, current, voltage and backup-source considerations.<sup><a href=\"#ref-2\">[2]<\/a><\/sup><\/p>\r\n    <\/div>\r\n\r\n    <div class=\"proof-card\">\r\n      <strong>Low-voltage product context<\/strong>\r\n      <p>ATS is positioned inside LEEYEE\u2019s wider Switching &amp; Isolation and low-voltage product structure rather than as an isolated informational topic.<\/p>\r\n    <\/div>\r\n  <\/div>\r\n\r\n  <div class=\"evidence-note\">\r\n    <strong>For project approval:<\/strong> website information is a starting point. Ask for the current model-specific datasheet, wiring information, required compliance documents and sample before treating any configuration as approved for a project.\r\n  <\/div>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"ats-standards-and-documentation-buyers-should-verify-in-2026\"><\/span>ATS Standards and Documentation Buyers Should Verify in 2026<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <p><strong>IEC 60947-6-1:2026<\/strong> is the current fourth edition of the IEC standard for transfer switching equipment. IEC states that the document applies to transfer switching equipment used to transfer a load between power sources and includes automatic transfer switching equipment, stand-alone ATS controllers, bypass\/isolation TSE and ATSE with closed-transition capability. The fourth edition was published on 2 April 2026 and replaces the 2021 third edition.<sup><a href=\"#ref-3\">[3]<\/a><\/sup><\/p>\r\n\r\n  <p>This does <strong>not<\/strong> mean that every automatic transfer switch referring to IEC 60947-6-1 is certified to the 2026 edition. For an IEC-oriented project, verify the actual model-specific certificate, test report or manufacturer documentation and check the edition, model scope and electrical ratings.<\/p>\r\n\r\n  <p>For North American projects, UL Solutions identifies <strong>UL 1008<\/strong> for automatic transfer switches used in emergency systems and optional standby systems.<sup><a href=\"#ref-4\">[4]<\/a><\/sup> If UL 1008 is mandatory, request explicit model-specific UL evidence. A CE document, IEC reference or generic supplier statement should not be treated as equivalent evidence.<\/p>\r\n\r\n  <div class=\"boundary\">\r\n    <strong>Document rule:<\/strong> never approve an ATS only because a supplier shows a certification logo. The relevant document must match the product and project scope being ordered.\r\n  <\/div>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"oem-automatic-transfer-switch-supply-from-requirement-to-approved-sample\"><\/span>OEM Automatic Transfer Switch Supply: From Requirement to Approved Sample<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <p>For an <strong>OEM automatic transfer switch<\/strong> order, electrical configuration comes before logo and packaging. LEEYEE\u2019s ATS-63 product page states that customized services are available, but the exact customization scope for a specific order should be confirmed in the quotation and approved sample.<sup><a href=\"#ref-1\">[1]<\/a><\/sup><\/p>\r\n\r\n  <figure class=\"figure\">\r\n    <img loading=\"lazy\" src=\"https:\/\/www.cnspd.com\/wp-content\/uploads\/2026\/09\/oem-ats-sample-to-bulk-process.webp\" width=\"1448\" height=\"1086\" loading=\"lazy\" decoding=\"async\" alt=\"OEM automatic transfer switch sample approval and bulk order process\">\r\n    <figcaption>Recommended OEM control path: requirement \u2192 model confirmation \u2192 sample \u2192 artwork \u2192 approval \u2192 bulk order \u2192 repeat-order control. The process illustration does not claim a fixed MOQ or production lead time.<\/figcaption>\r\n  <\/figure>\r\n\r\n  <h3>1. Confirm the electrical configuration<\/h3>\r\n\r\n  <p>Record the approved current, voltage, frequency, pole configuration, class, wiring arrangement and installation conditions. If any required parameter falls outside the published ATS-63 range, resolve it before artwork or packaging work begins.<\/p>\r\n\r\n  <h3>2. Approve the model and product identity<\/h3>\r\n\r\n  <p>Confirm the model number, rating information, buyer SKU and any private-label naming. Technical information printed on an OEM label must remain consistent with the approved product specification.<\/p>\r\n\r\n  <h3>3. Approve label, manual and packaging requirements<\/h3>\r\n\r\n  <p>Logo, product label, nameplate, instruction material, individual box, outer carton and SKU\/barcode requirements can be included in the OEM discussion. Exact availability should be confirmed item by item rather than assumed.<\/p>\r\n\r\n  <figure class=\"figure\">\r\n    <img loading=\"lazy\" src=\"https:\/\/www.cnspd.com\/wp-content\/uploads\/2026\/09\/ats-oem-label-packaging-options.webp\" width=\"1448\" height=\"1086\" loading=\"lazy\" decoding=\"async\" alt=\"OEM automatic transfer switch label nameplate manual and packaging customization\">\r\n    <figcaption>OEM customization illustration. Final label, nameplate, manual and packaging options must be confirmed for the actual ATS order.<\/figcaption>\r\n  <\/figure>\r\n\r\n  <h3>4. Freeze the approved sample<\/h3>\r\n\r\n  <p>The accepted sample should become a practical reference for bulk production. Keep its model, label, packaging artwork and relevant document version linked to the purchase order or approval record.<\/p>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"sample-approval-checklist-before-bulk-ordering\"><\/span>Sample Approval Checklist Before Bulk Ordering<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <p>A sample should answer more than \u201cDoes the product turn on?\u201d For OEM and distribution programs, use it to confirm the points that later need to stay consistent.<\/p>\r\n\r\n  <div class=\"table-wrap\">\r\n    <table class=\"responsive\" aria-label=\"ATS sample approval checklist\">\r\n      <thead>\r\n        <tr>\r\n          <th>Check<\/th>\r\n          <th>What to verify<\/th>\r\n          <th>Useful approval record<\/th>\r\n        <\/tr>\r\n      <\/thead>\r\n      <tbody>\r\n        <tr>\r\n          <td data-label=\"Check\">Product identity<\/td>\r\n          <td data-label=\"Verify\">Model, current, voltage, poles and product label<\/td>\r\n          <td data-label=\"Record\">Approved photo + specification<\/td>\r\n        <\/tr>\r\n\r\n        <tr>\r\n          <td data-label=\"Check\">Mechanical fit<\/td>\r\n          <td data-label=\"Verify\">Dimensions, DIN-rail fit and terminal access<\/td>\r\n          <td data-label=\"Record\">Drawing + panel check<\/td>\r\n        <\/tr>\r\n\r\n        <tr>\r\n          <td data-label=\"Check\">Transfer operation<\/td>\r\n          <td data-label=\"Verify\">Normal\/backup source switching under the agreed test conditions<\/td>\r\n          <td data-label=\"Record\">Agreed functional check<\/td>\r\n        <\/tr>\r\n\r\n        <tr>\r\n          <td data-label=\"Check\">Wiring information<\/td>\r\n          <td data-label=\"Verify\">Terminal identification and the intended project wiring arrangement<\/td>\r\n          <td data-label=\"Record\">Approved wiring document<\/td>\r\n        <\/tr>\r\n\r\n        <tr>\r\n          <td data-label=\"Check\">OEM presentation<\/td>\r\n          <td data-label=\"Verify\">Logo, nameplate, SKU\/barcode, manual and packaging<\/td>\r\n          <td data-label=\"Record\">Approved artwork files<\/td>\r\n        <\/tr>\r\n\r\n        <tr>\r\n          <td data-label=\"Check\">Compliance package<\/td>\r\n          <td data-label=\"Verify\">Required document and exact applicable model scope<\/td>\r\n          <td data-label=\"Record\">Verified document set<\/td>\r\n        <\/tr>\r\n      <\/tbody>\r\n    <\/table>\r\n  <\/div>\r\n\r\n  <p class=\"note\"><strong>Practical rule:<\/strong> do not release a customized bulk order from a quotation and product photo alone. Freeze a defined sample\/specification package first.<\/p>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"how-should-batch-and-repeat-order-consistency-be-controlled\"><\/span>How Should Batch and Repeat-Order Consistency Be Controlled?<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <p>Long-term distribution depends on repeatability. Before the first bulk order, agree which product characteristics must remain fixed and how a change will be handled. The exact LEEYEE inspection method for a specific ATS order should be confirmed in the commercial and quality documents rather than assumed from this page.<\/p>\r\n\r\n  <div class=\"check-grid\">\r\n    <div class=\"check-card\">\r\n      <strong>Model consistency<\/strong>\r\n      <p>The shipped model, current rating and pole configuration should match the approved order specification.<\/p>\r\n    <\/div>\r\n\r\n    <div class=\"check-card\">\r\n      <strong>Electrical specification<\/strong>\r\n      <p>Relevant ratings and functional requirements should remain aligned with the approved model.<\/p>\r\n    <\/div>\r\n\r\n    <div class=\"check-card\">\r\n      <strong>Label consistency<\/strong>\r\n      <p>Private-label artwork, ratings, model designation and SKU information should match approved files.<\/p>\r\n    <\/div>\r\n\r\n    <div class=\"check-card\">\r\n      <strong>Packaging consistency<\/strong>\r\n      <p>Confirm manuals, individual packaging, accessories and outer-carton requirements for repeat orders.<\/p>\r\n    <\/div>\r\n\r\n    <div class=\"check-card\">\r\n      <strong>Document version<\/strong>\r\n      <p>Track the datasheet, wiring information and compliance documents used for the approved order.<\/p>\r\n    <\/div>\r\n\r\n    <div class=\"check-card\">\r\n      <strong>Change notification<\/strong>\r\n      <p>Define which electrical, mechanical, labeling or documentation changes require buyer re-approval.<\/p>\r\n    <\/div>\r\n  <\/div>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"where-is-a-compact-6a%e2%80%9363a-automatic-transfer-switch-a-good-fit\"><\/span>Where Is a Compact 6A\u201363A Automatic Transfer Switch a Good Fit?<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <p>LEEYEE positions ATS-63 for compact backup-power applications such as generator backup, control panels, small distribution systems and light commercial systems.<sup><a href=\"#ref-1\">[1]<\/a><\/sup> Selection still depends on the actual electrical parameters and load requirements.<\/p>\r\n\r\n  <h3>Generator backup<\/h3>\r\n\r\n  <p>ATS-63 can be used between utility power and generator backup when the voltage, current, poles, wiring and control arrangement are compatible.<sup><a href=\"#ref-1\">[1]<\/a><\/sup> The published &lt;50 ms value is the transfer switching time of the ATS; generator starting and stabilization time is separate.<sup><a href=\"#ref-2\">[2]<\/a><\/sup><\/p>\r\n\r\n  <h3>Compact distribution boards<\/h3>\r\n\r\n  <p>DIN-rail mounting and 2P\/4P options can suit compact distribution assemblies where the electrical configuration and panel layout match the ATS-63 data. Check enclosure conditions, dimensions and protective coordination before finalizing the panel.<\/p>\r\n\r\n  <h3>Control cabinets<\/h3>\r\n\r\n  <p>The compact format can support backup switching for suitable cabinet circuits. Motor, pump or other high-inrush loads require additional load review rather than selection by nominal current alone.<\/p>\r\n\r\n  <h3>Compatible inverter or solar backup systems<\/h3>\r\n\r\n  <p>LEEYEE\u2019s ATS selection guide includes inverter and solar backup applications.<sup><a href=\"#ref-2\">[2]<\/a><\/sup> Confirm inverter AC output, voltage, frequency, neutral\/earthing arrangement and transfer behavior before approving the ATS.<\/p>\r\n\r\n  <div class=\"fit-box\">\r\n    <p><strong>Where LEEYEE fits best today:<\/strong> buyers sourcing a compact 6A\u201363A, 2P\/4P, PC-class DIN-rail automatic transfer switch with model confirmation, OEM discussion and repeat-order requirements.<\/p>\r\n\r\n    <p><strong>Where separate engineering or product confirmation is needed:<\/strong> higher-current ATS, 3P, CB-class, closed-transition, zero-interruption, hospital\/data-center critical-transfer or market-specific certification requirements not established by the current ATS-63 documentation.<\/p>\r\n  <\/div>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"how-moq-bulk-pricing-and-lead-time-should-be-confirmed\"><\/span>How MOQ, Bulk Pricing and Lead Time Should Be Confirmed<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <p>There is no responsible single MOQ, price or lead-time number that applies to every ATS order. Commercial terms can change with model, quantity, packaging, OEM artwork, documentation, sampling and destination market.<\/p>\r\n\r\n  <p>For a comparable quotation, request pricing against a defined configuration. A standard 2P ATS order and a private-label 4P order with customized packaging are different supply requirements.<\/p>\r\n\r\n  <div class=\"buyer-meaning\">\r\n    <strong>Buyer meaning:<\/strong> compare suppliers using the same model specification, packaging basis, required documents, sample conditions, lead-time basis and repeat-order requirement\u2014not only the lowest unit price.\r\n  <\/div>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"ats-rfq-checklist-what-should-you-send-to-the-manufacturer\"><\/span>ATS RFQ Checklist: What Should You Send to the Manufacturer?<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <p>A complete RFQ helps an automatic transfer switch supplier confirm the configuration faster and reduces the risk of approving the wrong sample.<\/p>\r\n\r\n  <figure class=\"figure\">\r\n    <img loading=\"lazy\" src=\"https:\/\/www.cnspd.com\/wp-content\/uploads\/2026\/09\/ats-project-rfq-information-checklist.webp\" width=\"1448\" height=\"1086\" loading=\"lazy\" decoding=\"async\" alt=\"Automatic transfer switch RFQ information checklist for OEM and distribution projects\">\r\n    <figcaption>ATS RFQ checklist for OEM, distributor, generator-integration and panel projects. Final model selection still requires review of the actual system.<\/figcaption>\r\n  <\/figure>\r\n\r\n  <div class=\"check-grid\">\r\n    <div class=\"check-card\">\r\n      <strong>Electrical system<\/strong>\r\n      <p>Voltage, frequency, rated load current, load type, single\/three phase and required pole arrangement.<\/p>\r\n    <\/div>\r\n\r\n    <div class=\"check-card\">\r\n      <strong>Power sources<\/strong>\r\n      <p>Normal source, backup source, source priority and relevant generator or inverter control information.<\/p>\r\n    <\/div>\r\n\r\n    <div class=\"check-card\">\r\n      <strong>Installation<\/strong>\r\n      <p>Panel type, available space, DIN-rail arrangement, wiring constraints and environment.<\/p>\r\n    <\/div>\r\n\r\n    <div class=\"check-card\">\r\n      <strong>Market documents<\/strong>\r\n      <p>Destination country and required standard, certificate, report, datasheet, manual or tender document.<\/p>\r\n    <\/div>\r\n\r\n    <div class=\"check-card\">\r\n      <strong>Commercial requirement<\/strong>\r\n      <p>Sample quantity, estimated bulk quantity, repeat-order plan and requested delivery schedule.<\/p>\r\n    <\/div>\r\n\r\n    <div class=\"check-card\">\r\n      <strong>OEM requirement<\/strong>\r\n      <p>Brand, label\/nameplate, SKU\/barcode, manual language, individual box and outer-carton requirements.<\/p>\r\n    <\/div>\r\n  <\/div>\r\n\r\n  <div class=\"cta\">\r\n    <p><strong>Need an ATS model check before sampling?<\/strong> Send the RFQ information above. LEEYEE can compare the requirement with the current ATS-63 range and identify which points still need technical or commercial confirmation.<\/p>\r\n\r\n    <button type=\"button\" class=\"leeyee-about-btn-light leeyee-site-popup-btn\" aria-label=\"Request ATS OEM Configuration\">\r\n      <span class=\"w-btn-label\">Request ATS OEM Configuration<\/span>\r\n    <\/button>\r\n  <\/div>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"faq-for-oem-distributor-and-project-buyers\"><\/span>FAQ for OEM, Distributor and Project Buyers<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <div class=\"faq\">\r\n    <details>\r\n      <summary>What automatic transfer switch range does LEEYEE currently publish?<\/summary>\r\n      <div>\r\n        <p>LEEYEE\u2019s current ATS-63 product page lists 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A and 63A options, with AC110V \/ AC220V \/ AC400V, 50\/60Hz, 2P or 4P, PC class and DIN-rail mounting.<sup><a href=\"#ref-1\">[1]<\/a><\/sup><\/p>\r\n      <\/div>\r\n    <\/details>\r\n\r\n    <details>\r\n      <summary>Does LEEYEE supply 2P and 4P automatic transfer switches?<\/summary>\r\n      <div>\r\n        <p>Yes. The published ATS-63 range includes 2P and 4P versions.<sup><a href=\"#ref-1\">[1]<\/a><\/sup> The final choice depends on the actual system and neutral-switching requirements.<\/p>\r\n      <\/div>\r\n    <\/details>\r\n\r\n    <details>\r\n      <summary>Does LEEYEE currently publish a 3P ATS?<\/summary>\r\n      <div>\r\n        <p>Not in the ATS-63 data used for this page. The published pole options are 2P and 4P.<sup><a href=\"#ref-1\">[1]<\/a><\/sup> A 3P requirement should therefore be confirmed separately before specification or quotation approval.<\/p>\r\n      <\/div>\r\n    <\/details>\r\n\r\n    <details>\r\n      <summary>Is LEEYEE ATS-63 PC class or CB class?<\/summary>\r\n      <div>\r\n        <p>ATS-63 is published as <strong>PC class<\/strong> with utilization category AC-31B.<sup><a href=\"#ref-1\">[1]<\/a><\/sup> This page does not claim a CB-class ATS-63 configuration.<\/p>\r\n      <\/div>\r\n    <\/details>\r\n\r\n    <details>\r\n      <summary>Can LEEYEE supply an ATS above 63A?<\/summary>\r\n      <div>\r\n        <p>The current published ATS-63 range stops at 63A.<sup><a href=\"#ref-1\">[1]<\/a><\/sup> Requirements above 63A should be submitted for separate availability confirmation rather than assumed from this manufacturer page.<\/p>\r\n      <\/div>\r\n    <\/details>\r\n\r\n    <details>\r\n      <summary>Can ATS-63 be used for generator backup?<\/summary>\r\n      <div>\r\n        <p>Yes, when the system voltage, current, poles, wiring and generator-side conditions match the selected ATS configuration.<sup><a href=\"#ref-1\">[1]<\/a><\/sup> Generator starting and stabilization time is separate from the ATS switching time.<sup><a href=\"#ref-2\">[2]<\/a><\/sup><\/p>\r\n      <\/div>\r\n    <\/details>\r\n\r\n    <details>\r\n      <summary>Can I use the &lt;50 ms transfer time as the total generator backup time?<\/summary>\r\n      <div>\r\n        <p>No. The published &lt;50 ms value is the ATS transfer switching time.<sup><a href=\"#ref-1\">[1]<\/a><\/sup> A generator may require additional time to start and stabilize before it can support the load.<sup><a href=\"#ref-2\">[2]<\/a><\/sup><\/p>\r\n      <\/div>\r\n    <\/details>\r\n\r\n    <details>\r\n      <summary>Can I order an OEM or private-label automatic transfer switch?<\/summary>\r\n      <div>\r\n        <p>LEEYEE\u2019s ATS-63 product page states that customized services are available.<sup><a href=\"#ref-1\">[1]<\/a><\/sup> Send the required label, nameplate, manual, SKU\/barcode and packaging details so the exact customization scope can be confirmed before sample approval.<\/p>\r\n      <\/div>\r\n    <\/details>\r\n\r\n    <details>\r\n      <summary>Which IEC standard should an ATS buyer verify in 2026?<\/summary>\r\n      <div>\r\n        <p>The current IEC edition is <strong>IEC 60947-6-1:2026, Edition 4.0<\/strong>, published on 2 April 2026.<sup><a href=\"#ref-3\">[3]<\/a><\/sup> A reference to the standard does not by itself prove that a particular ATS is certified to that edition, so verify the actual product-document scope.<\/p>\r\n      <\/div>\r\n    <\/details>\r\n\r\n    <details>\r\n      <summary>Does LEEYEE ATS-63 have UL 1008 certification?<\/summary>\r\n      <div>\r\n        <p>This page does not claim UL 1008 certification for ATS-63. If UL 1008 is mandatory for your project, request model-specific evidence before approval. UL Solutions identifies UL 1008 as a relevant standard for automatic transfer switches used in emergency and optional standby systems.<sup><a href=\"#ref-4\">[4]<\/a><\/sup><\/p>\r\n      <\/div>\r\n    <\/details>\r\n\r\n    <details>\r\n      <summary>What information should I send for an ATS quotation?<\/summary>\r\n      <div>\r\n        <p>Send the system voltage and frequency, load current and load type, phase and pole requirement, normal and backup sources, installation constraints, destination market, required documentation, quantity and OEM requirements.<\/p>\r\n      <\/div>\r\n    <\/details>\r\n  <\/div>\r\n\r\n  <div class=\"related\">\r\n    <strong>Continue Your ATS Sourcing Review<\/strong>\r\n    <a href=\"https:\/\/www.cnspd.com\/products\/leeyee-automatic-transfer-switch-solar-backup\/\">ATS-63 Product Data<\/a>\r\n    <a href=\"https:\/\/www.cnspd.com\/what-is-an-automatic-transfer-switch-how-ats-works-how-to-choose\/\">ATS Working &amp; Selection Guide<\/a>\r\n    <a href=\"https:\/\/www.cnspd.com\/shop\/isolator-switch\/\">Switching &amp; Isolation Products<\/a>\r\n    <a href=\"https:\/\/www.cnspd.com\/shop\/all-products\/\">All LEEYEE Products<\/a>\r\n  <\/div>\r\n\r\n  <section class=\"references\" aria-labelledby=\"ats-references\">\r\n    <h2 id=\"ats-references\"><span class=\"ez-toc-section\" id=\"references\"><\/span>References<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n    <ol>\r\n      <li id=\"ref-1\">\r\n        <strong>LEEYEE.<\/strong>\r\n        <a href=\"https:\/\/www.cnspd.com\/products\/leeyee-automatic-transfer-switch-solar-backup\/\" target=\"_blank\" rel=\"noopener\">Automatic Transfer Switch for Solar &amp; Home Backup | LEEYEE 2P\/4P ATS<\/a>.\r\n        Official ATS-63 product page. Published data includes 6A\u201363A, 2P\/4P, AC110V\/220V\/400V, 50\/60Hz, PC class, AC-31B, &lt;50 ms transfer switching time, Iq 5kA, Ui 690V, Uimp 8kV, IP30, dimensions and DIN-rail mounting.\r\n      <\/li>\r\n\r\n      <li id=\"ref-2\">\r\n        <strong>LEEYEE.<\/strong>\r\n        <a href=\"https:\/\/www.cnspd.com\/what-is-an-automatic-transfer-switch-how-ats-works-how-to-choose\/\" target=\"_blank\" rel=\"noopener\">What Is an Automatic Transfer Switch? How ATS Works &amp; How to Choose<\/a>.\r\n        Technical selection guide covering ATS function, 2P\/4P selection, current, voltage, backup sources and the distinction between ATS switching time and generator start\/recovery time.\r\n      <\/li>\r\n\r\n      <li id=\"ref-3\">\r\n        <strong>International Electrotechnical Commission.<\/strong>\r\n        <a href=\"https:\/\/webstore.iec.ch\/en\/publication\/90494\" target=\"_blank\" rel=\"noopener\">IEC 60947-6-1:2026, Edition 4.0 \u2014 Low-voltage switchgear and controlgear \u2013 Part 6-1: Multiple function equipment \u2013 Transfer switching equipment<\/a>.\r\n        Publication date: 2 April 2026. IEC states that the fourth edition cancels and replaces the third edition published in 2021.\r\n      <\/li>\r\n\r\n      <li id=\"ref-4\">\r\n        <strong>UL Solutions.<\/strong>\r\n        <a href=\"https:\/\/www.ul.com\/services\/switch-certification-and-evaluation-services\" target=\"_blank\" rel=\"noopener\">Switch Certification and Evaluation Services<\/a>.\r\n        UL Solutions lists UL 1008 for automatic transfer switches used in emergency systems and optional standby systems.\r\n      <\/li>\r\n    <\/ol>\r\n  <\/section>\r\n\r\n<\/article>\r\n\r\n<script>\r\ndocument.addEventListener('DOMContentLoaded', function () {\r\n  var aboutPopupButtons = document.querySelectorAll('.leeyee-site-popup-btn');\r\n\r\n  aboutPopupButtons.forEach(function (button) {\r\n    button.addEventListener('click', function () {\r\n      var realPopupTrigger = document.querySelector('.w-popup.ush_popup_1 .w-popup-trigger');\r\n\r\n      if (realPopupTrigger) {\r\n        realPopupTrigger.click();\r\n      } else {\r\n        window.open('https:\/\/www.cnspd.com\/contact\/', '_blank', 'noopener');\r\n      }\r\n    });\r\n  });\r\n});\r\n<\/script>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>B2B Automatic Transfer Switch Sourcing &amp; OEM Guide If you are looking for an automatic transfer switch manufacturer, ATS factory or long-term ATS supplier, the first question is not simply who can quote a transfer switch. The real procurement question is whether the supplier can match your electrical system, document the exact configuration, approve a&#8230;<\/p>","protected":false},"author":18,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[490,1,422],"tags":[],"class_list":["post-31015","post","type-post","status-publish","format-standard","hentry","category-isolator-switching","category-news","category-industry-news"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Automatic Transfer Switch Manufacturer &amp; OEM ATS | LEEYEE<\/title>\n<meta name=\"description\" content=\"LEEYEE supplies 6A\u201363A, 2P and 4P PC-class automatic transfer switches for OEM, distributors and panel projects. Review ATS specifications, supplier verification, OEM approval and RFQ requirements.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.cnspd.com\/th\/automatic-transfer-switch-manufacturer\/\" \/>\n<meta property=\"og:locale\" content=\"th_TH\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Automatic Transfer Switch Manufacturer &amp; OEM ATS | LEEYEE\" \/>\n<meta property=\"og:description\" content=\"LEEYEE supplies 6A\u201363A, 2P and 4P PC-class automatic transfer switches for OEM, distributors and panel projects. 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