The Legrand DX3 RCBO DP 16A 30mA is a dual-pole safety device engineered for residential final circuit protection. It integrates residual current detection (30mA Type AC) and overcurrent protection (16A Curve C) into a single 2-module DIN rail unit. This BIS-certified breaker monitors both live and neutral lines to prevent earth leakage, short circuits, and overloads.