The Siemens SIRIUS 3RV1031-4HA10-ZW96 is a 3-pole motor protection circuit breaker rated for 50 A continuous current, with a Class 10 trip characteristic and a rated operational voltage of 690 V AC-3. Rated at 22 kW at 400 V, this breaker provides phase failure detection and offers breaking capacities of 100 kA at 240 V AC, 50 kA at 400 V AC, 10 kA at 500 V AC, and 4 kA at 690 V AC. The IP20 protection on the front means it is safe for use in enclosed panels where personnel contact with live parts is prevented by the enclosure.
The product carries a substance prohibitance date of 07/01/2006, confirming RoHS compliance from that date forward. The manufacturer provides a declaration of conformity covering the applicable standards (IEC/EN 60947) and the CE mark for the European market.
Dimensions are 55 mm wide, 140 mm high, and 149 mm deep. Zero mm clearance is required at the back and at the sides, so it can be placed flush against the back panel or adjacent components without derating. Main circuit terminals accept solid conductors 2x (0.75 to 16 mm²) and stranded conductors 2x (0.75 to 25 mm²) or 1x (0.75 to 35 mm²). Auxiliary and control circuit terminals are screw-type as well. The box terminal design provides a reliable connection for motor power wiring.
Electrical & Environmental Ratings
Power dissipation in the hot operating state is 29 W total, or 9.7 W per pole. This figure is relevant for enclosure thermal calculations, especially when multiple breakers are ganged. Shock resistance is rated at 25g for 11 ms, sufficient for most industrial machinery and conveyor applications. The maximum operating frequency under AC-3 duty is 15 operations per hour, and the rated surge voltage withstand is 6000 V. No ground fault detection is built in; phase failure detection is standard.
Auxiliary Switch & Extension
This is a standard feature on the SIRIUS 3RV1 platform.