Legrand DX3 RCCB FP 40A 30mA Specifications, Features & Compatibility Guide

A 30mA sensitivity rating is specifically chosen for residential safety because it trips before leakage current reaches levels that cause cardiac arrest. The 10kA breaking capacity ensures the device maintains structural integrity during high-fault events when paired with a backup MCB. Its 4-module width of 72mm allows for standard integration into 35mm DIN rail setups while managing a 40A continuous load.