402064 Legrand RX³ Residual current circuit breaker 4P 400V 63A 30 mA AC type

The Legrand 402064 is a 4-pole RX3 residual current device (RCD) designed to protect electrical installations against earth-leakage faults and reduce the risk of electric shock. Rated at 63 A with a 30 mA sensitivity (AC type), this RCD detects leakage currents and disconnects the circuit when thresholds are exceeded, enhancing safety for residential, commercial, and light industrial applications. It operates at a nominal voltage of 400 V~ and is suitable for DIN-rail mounting in distribution boards and control panels. Built to comply with relevant international safety standards, the 402064 features screw-type terminals and halogen-free construction, providing dependable performance and long-term reliability in low-voltage power systems.