Siemens 3RV20424MB10 SIRIUS Motor Protection Circuit Breaker Brand: Siemens. Part Number: 3RV20424MB10. SIRIUS Motor Protection Circuit Breaker, Series: 3RV2, 690 VAC, 80 to 100 A, 90 kW Power, 50 to 60 Hz Frequency, 3 kA Interrupt, S3 Frame, Magnetic Trip, 3 Pole, 3 ph, Screw Connection, IP20 Enclosure, DIN Rail Mounting, -20 to 60 deg C, 165 mm H x 70 mm W x 176 mm D Dimensions. Additional Description: SIEM-3RV20424MB10 CIRCUIT BREAKER SCREW-TYPE 100 A. Catalog Description: Circuit breaker size S3 for motor protection. CLASS 20 A release 80...100 A N release 1300 A Screw-type connection Incr. switching capacity 100 kA..