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    Item No.: LY1-D20/1(S)

    LY1-D20/1(S) PLUGGABLE SINGLE-POLE SPD

    Description：

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

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      Our 20kA 1 pole AC surge protective device is designed for compact protection in single-phase AC systems.
      Using premium MOV ZnO varistors, it provides fast response and reliable overvoltage suppression for sensitive loads.
      The enclosure is made of PVC/PA66/PBT, ensuring excellent insulation and flame resistance.
      Manufactured under IEC 61643-11:2011 / EN 61643-11:2022 standards and certified by CE & TUV, this SPD ensures long-term stability.
      We are a professional surge protection manufacturer and factory, offering OEM/ODM, wholesale, and bulk buy services for global customers.

      Applicable scenarios / Application industries


      Ideal for residential distribution panels, AC power systems, and solar inverter boxes, with easy 35mm DIN rail installation.

      ■ Technical Data
      IEC Electrical75150275320385440
      Nominal AC Voltage (50/60Hz)Uo/ Un60 V120 V230 V230 V230 V400 V
      Maximum Continuous Operating Voltage (AC)Uc75 V150 V275V320 V385 V440 V
      Nominal Discharge Current (8/20 μs)In10 kA10 kA10 kA10 kA10 kA10 kA
      Maximum Discharge Current (8/20 μs)Imax20 kA20 kA20 kA20 kA20 kA20 kA
      Voltage Protection LevelUp0.2 kV0.6 kV1.3 kV1.5 kV1.5 kV1.8 kV
      Response TimetA< 25 ns
      Back-Up Fuse (max)125 A gL / gG
      Short-Circuit Current Rating (AC)ISCCR10 kA
      TOV Withstand 5sUT90V180V335V335V335V580V
      TOV 120minUT115V230V440V440V440V765V
      modeWithstandWithstandSafe FailSafe FailSafe FailSafe Fail
      Mechanical & Environmental
      Operating Temperature RangeTa-40ºF to +158ºF [-40ºC to +70ºC]
      Permissible Operating HumidityRH5%…95%
      Atmospheric pressure and altitude80k Pa … 106k Pa / -500 m…… 2000 m
      Terminal Screw TorqueMmax39.9 Ibf·in[4.5 Nm]
      Conductor Cross Section (max)2 AWG (Solid, Stranded) / 4 AWG (Flexible)
      35 mm² (Solid, Stranded) / 25 mm²(Flexible)
      Mounting35 mm DIN Rail, EN 60715
      Degree of ProtectionIP 20 (built-in)
      Housing MaterialThermoplastic: Extinguishing Degree UL 94 V-0
      Thermal ProtectionYes
      Operating State / Fault IndicationGreen 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-D20/1(S) PLUGGABLE SINGLE-POLE SPD

      1. What type of protection does theLY1-D20/1(S) offer?

      This model is a single-pole Type 2 surge protective device designed for low-voltage AC power systems, offering reliable protection against transient overvoltage.

      2. What surge protection components are used inside?

      The LY1-D20/1(S) uses high-performance MOV varistors, ensuring fast response time and stable clamping performance.

      3. Is the SPD module replaceable?

      Yes. It features a fully pluggable cartridge, allowing quick replacement during maintenance without rewiring.

      4. Where is this SPD typically installed?

      Common applications include residential AC distribution boards, AC mains protection, commercial panels, and equipment supply circuits.

      5. Does the LY1-D20/1(S) meet international standards?

      Yes, it complies with IEC/EN 61643-11 and is certified with CE / TUV, suitable for global markets.

      6. Does it include a status indicator?

      Yes, a visual indicator window shows the operating state and failure status of the module.

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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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