The ABB 2CSF204101R3630 is a 63 A four-pole residual current circuit breaker designed for 50 Hz AC distribution boards. Rated insulation voltage is 500 V, which covers standard residential and light commercial mains. The IP2X enclosure means it is finger-safe when installed in a panel but not intended for wet environments.
Panel fit and mounting
Mounts on a DIN rail; occupies a standard 4-module width (70 mm). Depth is 69 mm, so it clears most domestic enclosure back-walls. Verify busbar routing and gland plate clearance before panel wiring. 50 Hz only – do not install on variable-frequency supplies where DC leakage may saturate the RCD core.