The Siemens 3RV1041-4JA10-ZW95 is a SIRIUS motor protection circuit breaker rated for 63 A continuous current and 30 kW at 400 V AC-3 duty, with a Class 10 trip characteristic. It is designed for motor protection in main current circuits, with screw-type box terminals for the main circuit and separate screw terminals for the auxiliary and control circuit. The 63 A continuous rating means this breaker handles motor full-load currents up to that level; the 30 kW at 400 V figure is the typical three-phase motor it protects. Breaking capacity is 100 kA at 240 V AC, 50 kA at 400 V AC, 12 kA at 500 V AC, and 6 kA at 690 V AC — sufficient for most industrial panel fault levels without cascading upstream.
Any mounting position is allowed. Terminal capacity: solid conductors 2x (2.5 to 16 mm²); stranded 2x (10 to 50 mm²) or 1x (10 to 70 mm²). AWG equivalents for main contacts: 2x (10 to 1 AWG), 1x (10 to 2 AWG). Finely stranded with core-end processing: 2x (2.5 to 35 mm²) or 2.5 to 50 mm². No backwards or side clearance required. Power dissipation at rated current is 34 W total, 11.3 W per pole in hot operating state.
Shock resistance is 25 g for 11 ms. Surge voltage resistance rated at 6000 V. Maximum operating frequency in AC-3 duty is 15 operations per hour.