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    Item No.: LY1-12.5/2(S)

    LY1-12.5/2(S)PLUGGABLE SINGLE-POLE SPD

    Description：

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

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      We are a trusted 50kA 2 pole AC surge protective device supplier and factory, specializing in AC L+N protection for residential and commercial power systems. Our factory offers OEM, wholesale, and in bulk supply for global distributors.

      The housing uses graphite (C) material for superior heat resistance, with IP65 waterproofing for outdoor use. Installation is quick with DIN-rail mounting, and every unit comes with CE certification and a 2-year warranty.

      We support OEM customization and deliver SPDs in bulk, providing high-quality surge protection devices from a professional manufacturer trusted by global brands.

      Applicable scenarios / Application industries

      This SPD integrates MOV ZnO varistors with thermal disconnectors, ensuring consistent performance under repeated surges. Suitable for solar inverter input, combiner boxes, or AC distribution panels, it provides 50kA per line discharge capability.

       

      Electrical Characteristics
      SPD type 1+2+3
      Network 230/400 V 3-phase+N
      AC system TT-TNS
      Nominal line voltage Un 230/400 Vac
      Max. AC operating voltage Uc 275 Vac
      Temporary Over Voltage (TOV) Charasteristics – 5 sec. Without disconnection UT 335 Vac withstand
      Temporary Over Voltage (TOV) Charasteristics – 120 mn Without disconnection or with safety disconnection
      Temporary Over Voltage N/PE (TOV HT) Without disconnection or with safety disconnection UT 1.2 kV/300A/200 ms withstand
      Residual Current Leakage current to Ground Ipe None
      Follow current If None
      Nominal discharge current 15 x 8/20 µs impulses In 20 kA
      Max. discharge current max. withstand @ 8/20 µs by pole Imax 50 kA
      Impulse current by pole max. withstand 10/350µs by pole Iimp 12.5 kA
      Total lightning currentmax. total withstand @ 10/350µs Itotal 50 kA
      Withstand on Combination waveform IEC 61643-11 Class III test: 1.2/50µs – 8/20µs Uoc 6 kV
      Withstand on overvoltages IEEE C62.41.1 20 kV
      Specific energy by pole max. withstand 10/350 µs W/R 40 kJ/ohm
      Connection mode(s) L/N and N/PE
      Protection mode(s) Common/Differential mode
      Protection level L/N @ In (8/20µs) Up L/N 1.5 kV
      Protection level L/PE @ In (8/20µs) Up L/PE 1.5 kV
      Residual voltage L/N at 5 kA @ 5 kA (8/20µs) Up-5kA 0.7 kV
      Mechanical Characteristics
      Technology VG Technology (MOV+GSG)
      SPD configuration 3-phase+Neutral
      Connection to Network By 40mm busbar and wire for PE: 6-35mm² (50mm²)
      Format Plug-in modular box
      Mounting 40 mm busbar systems
      Housing material Thermoplastic UL94 V-0
      Operating temperature Tu -40/+85°C
      Outdoor application IP20
      Failsafe modem No
      Disconnection indicator Disconnection from AC network
      Remote signaling of disconnection 1 mechanical indicator by pole
      Dimensions Yes
      Weight See diagram
      Disconnectors 0.7401 kg
      Thermal disconnector Internal
      Installation ground fault breaker Type ‘S’ or delayed
      Fuses max. 315 A (gL/gG)
      Standards
      Standards compliance IEC 61643-11 / EN 61643-11 / UL1449 4ed.

      ■ Internal Configuration


      ■ Dimensions & Packaging


      ■ Connection Diagram

      FAQ for LY1-12.5/2(S)PLUGGABLE SINGLE-POLE SPD

      1. What makes the LY1-12.5/2(S) different from other pluggable SPDs?
      The LY1-12.5/2(S) is designed with an enhanced MOV protection module and improved thermal disconnection mechanism, providing stable AC surge suppression for sensitive equipment.

      2. Is the surge module replaceable?
      Yes, the pluggable cartridge can be removed and replaced easily without rewiring the base, reducing maintenance time and cost.

      3. What standards does this SPD follow?
      It is produced according to IEC 61643-11:2011 / EN 61643-11:2022, and certified with CE and TUV for global compliance.

      4. Where can this single-pole SPD be used?
      Common applications include residential AC circuits, commercial distribution boxes, office equipment panels, and lighting systems.

      5. What internal surge components are used?
      The LY1-12.5/2(S) uses MOV (ZnO) varistors, providing quick clamping and strong surge endurance.

      6. Does your factory offer OEM/ODM service for this model?
      Yes, we can provide OEM/ODM customization, logo printing, and wholesale bulk supply for distributors.

      7. What mounting method is used?
      It mounts onto 35 mm DIN rails, compatible with standard AC distribution boxes.

      Start Customizing Now

      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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