This 100kA 1P+N GDT AC surge protective device combines graphite arc gap, MOV ZnO, and GDT (Gas Discharge Tube) technology for ultra-reliable surge protection.
It offers excellent coordination between discharge and clamping performance, ideal for AC power systems and residential lightning protection.
The housing, made of high-strength PVC/PA66/PBT, ensures insulation and safety. Complies fully with IEC 61643-11:2011 / EN 61643-11:2022, and carries CE and TUV marks.
We are a professional manufacturer, supplier, and factory providing OEM/ODM customization, wholesale, and bulk buy options.
Installed on 35mm DIN rail, it fits perfectly into combiner boxes, control cabinets, and power panels.
Item No.: LY1-B25/1(S)+1
LY1-B25/1(S)+1 MONOBLOCK SINGLE-POLE SPD
Description：
Class 1·Class Il·Type 1.Type 2
Location of Use: Main Distribution Boards
Network Systems:TT,TN-S
Mode of Protection: L-N/L’-N, N-PE
Surge Ratings: limp = 25 kA/ 50 kA (10/350 μs)
l„ = 25 kA/ 50 kA (8/20 μs)
IEC/EN Category: Class 1+11 / Type 1+2
Protective Elements: High Energy MOV and GDT
Housing: Monoblock Design
Compliance:IEC 61643-11:2011
EN 61643-11:2012
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| ■ Technical Data | ||||||
| IEC Electrical | 150 | 275 | 320 | 385 | ||
| Nominal AC Voltage (50/60Hz) | Uo/ Un | 120 V | 230 V | 230 V | 230 V | |
| Maximum Continuous Operating Voltage (AC) | (L-N) | Uc | 150 V | 275 V | 320 V | 380V |
| (N-PE) | Uc | 255 V | 255 V | 255 V | 255 V | |
| Nominal Discharge Current (8/20 μs) | (L-N) / (N-PE) | In | 25 kA / 50 kA | |||
| Maximum Discharge Current (8/20 μs) | (L-N) / (N-PE) | Imax | 100 kA | |||
| Impulse Discharge Current (10/350 μs) | (L-N) / (N-PE) | Iimp | 25 kA / 50 kA | |||
| Total Discharge Current (10/350 μs) | Itotal | 50 kA | ||||
| Specific Energy | (L-N) / (N-PE) | W/R | 156 kJ / Ω / 625 kJ / Ω | |||
| Charge | (L-N) / (N-PE) | Q | 12.5 As / 25 As | |||
| Voltage Protection Level | (L-N) / (N-PE) | Up | 1 kV / 1.5 kV | 1.5 kV / 1.5 kV | 1.6 kV / 1.5 kV | 1.8 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 gL / gG | |||||
| Short-Circuit Current Rating (AC) | (L-N) | ISCCR | 50 kA | |||
| TOV Withstand 5s | (L-N) | UT | 180 V | 335 V | 335 V | 335 V |
| TOV 120min | (L-N) | UT | 230 V | 440 V | 440 V | 440 V |
| TOV Withstand 200ms | (N-PE) | UT | 1200 V | |||
| Number of Ports | 1 | |||||
| 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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■ Internal Configuration
■ Dimensions & Packaging
■ Connection Diagram
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