That 4 A figure is the continuous current the main poles carry; pair it with a motor drawing up to that full-load amp rating. The magnetic trip point is set at 51 A, so short-circuit faults above that level trip instantly without waiting for the thermal bimetal. The breaking capacity is what makes this part stand out: 100 kA Icu at 230/240 V, 400/415 V, 440 V, and 500 V AC. These ratings are per IEC 60947-2, the standard for circuit-breaker performance in industrial applications. The motor power range covers 1.1 kW at 400/415 V up to 2.2 kW at 690 V, so it fits small pumps, fans, conveyors, or compressors in that power band.
Mounting and integration — DIN rail or panel screw
At 45 mm wide, it takes up one standard modular slot — leaves room alongside a TeSys GV2 or GV7 breaker for a coordinated starter combination. The screw-clamp terminals accept 1 to 6 mm² solid or 1.5 to 6 mm² flexible wire; torque them to 1.7 N·m (15 lbf·in). IP20 finger-safe means it's protected against accidental contact inside the enclosure, but not against washdown — keep it inside a rated cabinet.