The Siemens 3RV1031-4FA15 is a SIRIUS motor-protection circuit breaker rated for 40 A continuous current and 18.5 kW at 400 V AC, with a Class 10 trip characteristic. Ground fault detection is not included — that would need a separate module or a different breaker variant.
Zero clearance on the sides and rear. Width is 55 mm, height 140 mm, depth 149 mm. Shock rated at 25 g for 11 ms. Mounting position is any.
Terminal wiring
Main circuit terminals are screw-type with box terminals, accepting stranded wire from 2x (0.75... 25 mm²) up to 1x (0.75 … 35 mm²), or AWG 2x (18... 2) to 1x (18... 2). Auxiliary and control circuit terminals are also screw-type, accepting solid wire 2x (0.5... 1.5 mm²) and 2x (0.75... 2.5 mm²). The auxiliary switch is transverse design and the product extension for an auxiliary switch is available. Auxiliary contact ratings: 1 A at 24 V, 0.5 A at 230 V, 0.15 A at 60 V. These are the switching capacities for the built-in or add-on auxiliary contacts — useful for feeding a PLC input or a contactor coil.