Lightning Protection T1 T2 SPD 3 Phase Home Surge Protector 220V 25kA 40kA 80kA

LPM 25B-385/4/LPM 50B-385/4 is a T1+T2 level power surge protector. It integrates primary (T1) and secondary (T2) protection, providing comprehensive shielding against direct and indirect lightning strikes.
 

Applications

Product Specification

mechanical parameters

Installation Tips

1.Install the lightning protection box in a dry, well-ventilated indoor environment, away from flammable materials.

2.Use wires with cross-sectional area 2.5mm²~10mm², and tighten the screws to 5N·m torque.

3.Ensure reliable grounding with ground resistance ≤4Ω to ensure optimal surge diversion effect.

4.Regularly check the lightning strike counter and LED status indicator; replace the product immediately if it fails.

5.Do not disassemble the product without authorization to avoid damage to internal components.

FAQ

Q1: What is Kevin Connection and when should it be used?

A1: Kevin Connection is a wiring method that minimizes current measurement errors. It is recommended for large current applications (≥25kA) to ensure accurate protection triggering.

Q2: Can it be used in 400V three-phase systems?

A2: Yes, with maximum continuous operating voltage 385Vac, it is compatible with 400V three-phase systems (230V phase-neutral).

Q3: What is the difference between T1 and T2 level protection?

A3: T1 level handles direct lightning strikes (10/350μs waveform), while T2 level protects against indirect surges (8/20μs waveform). This product integrates both for comprehensive protection.

Q4: What is the flame-retardant grade of the housing?

A4: The housing is made of mineral nylon PA6 with V0 flame-retardant grade, which self-extinguishes within 10 seconds after ignition.

Q5: What is the response time of the product?

A5: The response time is ≤100ns, ensuring rapid diversion of surge current to protect sensitive equipment.