The Siemens SIRIUS 3RV1041-4KA10-ZW95 is a motor protection circuit breaker rated for 75 A continuous current, delivering 37 kW at 400 V AC-3 duty. Breaking capacity is 100 kA at 240 V AC, 50 kA at 400 V, 8 kA at 500 V, and 5 kA at 690 V — sufficient for most industrial panel fault levels without requiring an upstream current-limiting fuse in many installations.
Main circuit terminals accept solid conductors 2x (2.5…16 mm²) and stranded 2x (10…50 mm²) or 1x (10…70 mm²), with AWG equivalents 2x (10…1) for the solid range. Auxiliary and control circuit connections use screw-type terminals. The box-terminal design on the main circuit provides a reliable, vibration-resistant connection for motor feeders.
Front-side protection is IP20, suitable for enclosed panel installation where the operator interface is behind a door or cover. Shock resistance is 25g / 11 ms. The product carries a substance prohibition date of 07/01/2006, indicating RoHS compliance per the EU directive effective that date.