Motor protection circuit breaker for the panel builder
Phase failure detection is included, so a lost phase on the line side will cause the breaker to open rather than letting the motor single-phase and overheat. The 100 kA breaking capacity holds at 240 V, 400 V, 500 V, and 690 V AC — the same rating across the voltage range, so coordination studies stay simple. At 500 V and 690 V, the manufacturer calls for a gL/gG 6 A backup fuse upstream — that is the only condition where an external fuse is required; at 240 V and 400 V none is needed.
Clearance requirements: 20 mm upwards and downwards, 9 mm to the side, 0 mm forwards and backwards — tight enough for dense panel layouts. Main circuit terminals accept 2× (0.5 to 1.5 mm²) or 2× (0.75 to 2.5 mm²) solid or stranded wire, M3 screw terminals.