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    Item No.: LY1-12.5/3(S)+1

    LY1-12.5/3(S)+1 PLUGGABLE MULTI-POLE SPD

    Description：

    Classl·Classll·Type 1 Type 2
    Location of Use: Main Distribution Boards
    Mode of Protection: L-N, N-PE
    Surge Ratings: Limp= 12.5 kA(10/350 μs)
    Ln= 20 kA (8 /20 μs)
    IEC/EN/UL Category: Class l+ll /Type 1+2
    Protective Elements: High Energy MOV and GDT
    Housing: Pluggable Design
    Compliance: lEC 61643-11:2011
    EN 61643-11:2012
    UL 1449 4th Edition

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      As a specialized 50kA 3P+N GDT AC surge protective device supplier, we manufacture advanced SPDs for industrial three-phase systems. Our factory supports OEM, wholesale, and bulk buy distribution worldwide.

      The 3P+N GDT SPD combines Neon-gas discharge tubes and MOV ZnO components for rapid and stable surge handling. It’s suitable for switchboards, PV combiner boxes, and data center power lines.

      With graphite (C) materials, IP65-rated casing, and DIN-rail installation, it offers durability and easy maintenance.

      All models are CE approved with a 2-year warranty, available for OEM customization and in bulk supply. We are your trusted factory partner for industrial-grade lightning and surge protection.

      ■ 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 255 V 255 V 255 V
      Nominal Discharge Current (8/20 μs) (L-N) / (N-PE) In 20 kA / 50 kA
      Maximum Discharge Current (8/20 μs) (L-N) / (N-PE) Imax 50 kA /100 kA
      Impulse Discharge Current (10/350 μs) (L-N) / (N-PE) Iimp 12.5 kA / 50 kA
      Specific Energy (L-N) / (N-PE) W/R 39 kJ/Ω / 625 kJ/Ω
      Charge (L-N) / (N-PE) Q 6.25 As / 25 As
      Voltage Protection Level (L-N) / (N-PE) Up 0.7 kV / 1.5 kV 1 kV / 1.5 kV 1.5 kV / 1.5 kV 1.6 kV / 1.5 kV
      (N-PE) Ifi 100 ARMS
      Response Time (L-N) / (N-PE) tA < 25 ns / < 100 ns
      Back-Up Fuse (max) 315 A / 250 A gG
      Short-Circuit Current Rating (AC) (L-N) ISCCR 25 kA / 50 kA
      TOV Withstand 5s (L-N) UT 114 V 180 V 335 V 335 V
      TOV 120min (L-N) UT 114 V 230 V 440 V 440 V
      mode Withstand Safe Fail Safe Fail Safe Fail
      TOV Withstand 200ms (N-PE) UT 1200 V
      UL Electrical
      Maximum Continuous Operating Voltage (AC) (L-N) / (N-PE) MCOV 75 V / 255 V 150 V / 255 V 275 V / 255 V 320 V / 255 V
      Voltage Protection Rating (L-N) / (N-PE) VPR 330 V / 1200 V 600 V / 1200 V 900 V / 1200 V 1200 V / 1200 V
      Nominal Discharge Current (8/20 μs) (L-N) / (N-PE) In 20 kA / 20 kA 20 kA / 20 kA 20 kA / 20 kA 20 kA / 20 kA
      Short-Circuit Current Rating (AC) (L-N) SCCR 100 kA 200 kA 150 kA 150 kA
      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

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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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