3 Phase Whole House Surge Protection Device 220V 40kA 50KA 80kA 100KA DIN Rail

LPM 40-385/4 Series is a T2 level power surge protector designed for three-phase power supply systems. It is specifically tailored for industrial and commercial power systems, providing reliable protection against transient overvoltages caused by lightning strikes and power grid fluctuations.

Product features

Product Features

Mechanical parameters

Notices

● Install the SPD in LPZ 0B-1 or subsequent lightning protection zones to ensure effective T2 protection.

● Use wiring with cross-sectional area 2.5mm²-32mm² and tighten screws to 5N·m torque.

● Regularly check the indication window—replace the product immediately if it turns red (failure status).

● Ensure the grounding system meets requirements (ground resistance ≤4Ω) for optimal surge diversion.

● Select the appropriate model based on the required discharge current (40kA/50kA/80kA/100kA).

● Avoid using the product beyond the specified temperature (-40℃~+80℃) and humidity range.

FAQ

Q1: What is the difference between the models in the series?

A1: The main difference is nominal discharge current (In) and maximum discharge current (Imax): LPM 40-385/4 (40kA/80kA), LPM 50-385/4 (50kA/100kA), LPM 80-385/4 (80kA/160kA), LPM 100-385/4 (100kA/200kA).

Q2: Does the product support remote monitoring?

A2: Yes, it is equipped with normally closed and normally open remote signaling contacts, enabling connection to monitoring systems for remote status tracking.

Q3: What is the function of the built-in ultra-low temperature release mechanism?

A3: It ensures the product operates safely in low-temperature environments (-40℃) and disconnects faulty modules to avoid hazards.

Q4: Can it be used in 400V three-phase systems?

A4: Yes, with maximum continuous operating voltage 385Vac, it is compatible with 400V three-phase systems (230V phase-neutral).

Q5: What is the flame-retardant grade of the housing?

A5: The housing is made of mineral nylon PA6 with V0 flame-retardant grade, which self-extinguishes within 10 seconds after ignition.