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    Item No.: LY1-D20M/1(S)+1

    LY1-D20M/1(S)+1PLUGGABLE MULTI-POLE SPD

    Description：

    Classll·Class lll·Type 2·Type 3
    Location of Use: Sub-Distribution Boards
    Mode of Protection: L-N, N-PE
    Surge Ratings: In = 10 kA (8/20 μs)
    IEC/EN/UL Category: Class ll+ll /Type 2+3
    Protective Elements: High Energy MOV and GDT
    Housing: Pluggable Design
    Compliance: lEC 61643-11:2011
    EN 61643-11:2012

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      The mini size 20kA 1P+N GDT AC surge protective device is tailored for single-phase AC power environments requiring a compact yet effective protection structure. As a global manufacturer, factory, and OEM/ODM supplier, we support wholesale, bulk buy, and in bulk distribution for electrical wholesalers and project integrators. This model features a durable Ne gas GDT, providing strong insulation, excellent surge clamping, and long operational life.

      The device follows IEC 61643-11:2011 / EN 61643-11:2022 and holds CE & TUV certifications. We provide extensive OEM support including private labeling, adjustable surge ratings, and special housing designs. For distributors seeking a compact, reliable, and affordable GDT-based SPD, this mini size 20kA P+N model is an excellent choice.

      Applicable scenarios / Application industries

      Constructed using PVC/PA66/PBT, the housing ensures safe operation under varying environmental conditions. The P+N configuration allows coordinated protection for live and neutral lines, making it suitable for residential AC systems, smart home devices, telecom power input, UPS systems, and compact electrical panels where space is limited. The 20kA rating provides adequate protection for environments with medium surge threats.

      ■ Technical Data
      IEC Electrical 75 150 275 320
      Nominal AC Voltage (50/60Hz) Uo/ Un 60 V 120 V 230 V 230 V
      Maximum Continuous Operating Voltage (AC) (L-N) Uc 75V 150 V 275 V 320 V
      (N-PE) Uc 255 V
      Nominal Discharge Current (8/20 μs) (L-N) / (N-PE) In 10 kA / 10 kA
      Maximum Discharge Current (8/20 μs) (L-N) / (N-PE) Imax 20 kA / 20 kA
      Voltage Protection Level (L-N) / (N-PE) Up 0.2 kV / 1.5 kV 0.6 kV / 1.5 kV 1.3 kV / 1.5 kV 1.5 kV / 1.5 kV
      (N-PE) Ifi 100 ARMS
      Response Time (L-N) / (N-PE) tA < 25 ns / < 100 ns
      Back-Up Fuse (max) 125 A gL/ gG
      Short-Circuit Current Rating (AC) (L-N) ISCCR 10 kA
      TOV Withstand 5s (L-N) UT 90 V 180 V 335 V 335 V
      TOV 120min (L-N) UT 115 V 230 V 440 V 440 V
      mode Withstand Safe Fail Safe Fail Safe Fail
      TOV Withstand 200ms (N-PE) UT 1200 V
      Mechanical & Environmental
      Operating Temperature Range Ta -40ºF to +158ºF [-40ºC to +70ºC]
      Permissible Operating Humidity RH 5%…95%
      Atmospheric pressure and altitude 80k Pa … 106k Pa / -500 m…… 2000 m
      Terminal Screw Torque Mmax 39.9 Ibf·in[4.5 Nm]
      Conductor Cross Section (max) 2 AWG (Solid, Stranded) / 4 AWG (Flexible)
      35 mm² (Solid, Stranded) / 25 mm²(Flexible)
      Mounting 35 mm DIN Rail, EN 60715
      Degree of Protection IP 20 (built-in)
      Housing Material Thermoplastic: Extinguishing Degree UL 94 V-0
      Thermal Protection Yes
      Operating State / Fault Indication Green ok / Red defect
      Remote Contacts (RC)
      RC Switching Capacity
      RC Conductor Cross Section (max)      		 Optional
      AC: 250V / 0.5 A; DC: 250V / 0.1 A;125V / 0.2 A;75V / 0.5 A
      16 AWG (Solid) / 1.5 mm²(Solid)

      ■ Internal Configuration


      ■ Dimensions & Packaging


      ■ Connection Diagram

      FAQ for LY1-D20M/1(S)+1PLUGGABLE MULTI-POLE SPD

      1. What type of surge protection does theLY1-D20M/1(S)+1 provide?
      The LY1-D20M/1(S)+1 is a multi-pole Type 2 surge protective device designed for three-phase AC systems. It delivers coordinated surge suppression across each phase and neutral, protecting sensitive equipment from voltage transients induced by lightning or switching events.

      2. What surge protection technology is used in this SPD?
      This model uses high-quality MOV (Metal Oxide Varistor) components as the core protection element, offering fast response time, high energy absorption, and stable clamping performance.

      3. Is the module on the LY1-D20M-1S1 replaceable?
      Yes. The LY1-D20M/1(S)+1 features a pluggable modular design that allows easy replacement of individual protection cartridges without disconnecting the base wiring, simplifying maintenance and reducing downtime.

      4. Where is this SPD typically installed?
      It is ideal for industrial distribution cabinets, three-phase power panels, building automation systems, machinery control boards, and commercial electrical mains that require reliable multi-line surge protection.

      5. Does the LY1-D20M/1(S)+1 comply with international standards?
      Yes, this SPD is manufactured according to IEC 61643-11:2011 / EN 61643-11:2022, and holds CE and TUV certifications, ensuring compliance with global safety and performance requirements.

      6. Does the product include a status indicator?
      Yes. Each module is equipped with a visual status indicator clearly showing whether the unit is operating normally or requires replacement, helping technicians perform fast on-site checks.

      7. Do you provide OEM/ODM customization and bulk supply options?
      Absolutely. As an experienced surge protective device manufacturer and factory supplier, we support OEM/ODM private labeling, custom specifications, housing color options, and wholesale / bulk buy / in bulk distribution for global partners.

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      We offer a full range of customised services, working closely with our customers every step of the way, from concept design to final delivery.

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