AC surge protective device LY1-12.5/3(S)+1 PLUGGABLE MULTI-POLE SPD,
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.
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) |
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| 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) |
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