Our 100kA 2 pole AC surge protective device is engineered for robust surge protection across dual-phase power systems. Using graphite arc gap + MOV ZnO components, it effectively absorbs transient overvoltage caused by lightning or switching surges.
Constructed with PVC/PA66/PBT housing, the SPD features excellent flame resistance and long service life. It meets IEC 61643-11:2011 / EN 61643-11:2022 international standards and carries CE & TUV certifications.
As a direct manufacturer and factory supplier, we provide OEM/ODM services with wholesale and bulk buy options to global partners.
This SPD is ideal for AC power distribution, solar systems, and industrial control cabinets, mounted easily via 35mm DIN rail installation. Trust our factory for reliable surge protection solutions.
LY1-B25/2(S) MONOBLOCK SINGLE-POLE SPD
Description：
Class l·Class II·Type 1·Type 2
Location of Use: Main Distribution Boards
Network Systems: TN-S
Mode of Protection: L-PE / L’-PE, N-PE / N’-PE
Surge Ratings: limp= 25 kA(10/350μs)
I„ = 25 kA (8 /20 μs)
IEC/EN Category: Class 1+11 / Type 1+2
Protective Elements: High Energy MOV
Housing: Monoblock Design
Compliance: IEC 61643-11:2011
EN 61643-11:2012
| ■ Technical Data | ||||||
| IEC Electrical | 150 | 275 | 320 | 385 | 440 | |
| Nominal AC Voltage (50/60Hz) | Uo/ Un | 120 V | 230 V | 230 V | 230 V | 400 V |
| Maximum Continuous Operating Voltage (AC) | Uc | 150 V | 275V | 320 V | 385 V | 440 V |
| Nominal Discharge Current (8/20 μs) | In | 25kA | ||||
| Maximum Discharge Current (8/20 μs) | Imax | 100kA | ||||
| Impulse Discharge Current (10/350 μs) | Iimp | 25kA | ||||
| Total Discharge Current (10/350μs) | Itotal | 50kA | ||||
| Specific Energy | W/R | 156 kJ / Ω | ||||
| Charge | Q | 12.5 As | ||||
| Voltage Protection Level | Up | 1 kV | 1.5 kV | 1.6 kV | 1.8 kV | 2 kV |
| Response Time | tA | < 25 ns | ||||
| Back-Up Fuse (max) | 315 A gL / gG | |||||
| Short-Circuit Current Rating (AC) | ISCCR | 50 kA | ||||
| TOV Withstand 5s | UT | 180V | 335V | 335V | 335V | 580V |
| TOV 120min | UT | 230V | 440V | 440V | 440V | 765V |
| 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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