Motor protection circuit breaker for DIN-rail panels
Spring-loaded terminals accept 2x (0.5 to 2.5 mm²) solid or stranded conductors, so no ferrule crimping is required for the main circuit connection.
Breaking capacity and fault coordination
Rated breaking capacity reaches 100 kA at 240 V, 400 V, and 500 V, dropping to 10 kA at 690 V — this SCCR allows the breaker to clear high-fault currents upstream of a motor starter without cascading to the main breaker. The unit includes phase failure detection, so a lost phase on the line side will trip the breaker — critical for preventing single-phasing damage on a three-phase motor. Rated operational voltage spans 20 to 690 V AC, covering most low-voltage motor circuits from control transformers up to 690 V line supplies.
Mounting and clearance dimensions
Required clearances around the breaker: 50 mm above and below, 30 mm to the side, and 0 mm forward/backward from the mounting surface — this means side-by-side stacking is allowed with zero gap, but vertical spacing must be maintained for heat dissipation.