It's rated at 4 A continuous current and uses a thermal-magnetic trip mechanism: the thermal element protects against sustained overloads by tracking motor heating, while the magnetic element trips instantaneously at 74 A for short-circuit faults. This breaker is designed for motor protection duty in control panels. The IP20 finger-safe enclosure suits open mounting inside a cabinet.
It holds that rating down to 230 V and up to 500 V, then drops to 3 kA at 690 V. For most industrial motor circuits fed from a typical 400 V distribution transformer, 100 kA covers nearly any fault scenario. Motor power capability spans 1.1 kW at 400 V up to 3 kW at 690 V, depending on the line voltage. The 4 A thermal setting matches small motors — think fractional-horsepower pumps, fans, or conveyor drives. The magnetic trip at 74 A (18.5× In) is fixed, so it clears hard shorts without nuisance tripping on motor inrush. Power dissipation per pole is 2.5 W, so the total 7.5 W heat load matters when packing multiple breakers in a small enclosure — derating or ventilation may be needed above 40 °C ambient.
Mounts horizontally or vertically on 35 mm DIN rail. Dimensions are 89 mm high, 45 mm wide, 78.5 mm deep — a standard 4-module footprint that leaves room for adjacent devices. The screw-clamp terminals accept up to two 6 mm² solid or 4 mm² flexible conductors per pole, torqued to 1.7 N·m. A 1 NO/NC auxiliary contact is built into the front, giving a status signal back to the PLC or indicator lamp without an add-on block. Phase-failure sensitivity is built in per IEC 60947-4-1, so the breaker trips if one phase drops out — critical for preventing single-phasing motor damage.
Compliance documentation is solid: UL 60947-4-1, CSA C22.2 No 60947-4-1, and EN/IEC 60947-2 and -4-1 cover North American and European installations. Fire resistance tested to 960 °C per IEC 60695-2-11, and climatic withstand per IACS for marine environments.