The SIRIUS 3RV2 motor starter protectors/circuit breakers are compact, current limiting motor starter protectors/circuit breakers which are optimized for load feeders. The motor starter protectors/circuit breakers are used for switching and protecting three-phase motors of up to 55/45 kW at 400 VAC and for other loads with rated currents of up to 100 A. Siemens Motor Protection Circuit Breaker, Series: 3RV2, 690 VAC, 5.5 to 8 A, 5.5 kW Power, 50 to 60 Hz Frequency, 4 kA Interrupt, S00 Frame, Magnetic Trip, 163 A Trip, 3 Pole, 3 ph, Screw Connection, 1NO-1NC Auxiliary, 18 to 14 AWG Wire, IP20 Enclosure, DIN Rail Mounting, -20 to 60 °C, 97 mm H x 45 mm W x 96 mm D Dimensions