Description

The CF463J is a 4-pole RCCB rated at 63A with 300mA Type A residual current sensitivity. Designed for use as an incomer protective device in three-phase TT system distribution boards, it provides selective earth fault protection without causing nuisance tripping from accumulated leakage of multiple downstream circuits.
The 300mA threshold is primarily used for fire protection purposes and as part of a coordinated protection scheme where 30mA devices are installed on individual branch circuits. The 4-pole design ensures all phase conductors and neutral are monitored.
The CF463J operates at 230/400V AC and is DIN rail mountable. It is IP20 rated, RoHS compliant, and packaged as 1 piece per unit.