Siemens Circuit breaker for motor protection, size S2, 949AProduct Overview Circuit breaker size S2 for motor protection, CLASS 10 A release 54 65 A N release 845 A screw terminal Standard switching capacity Key Features Size: S2 (55 mm width) Current Range: 54 65 A adjustable thermal overload release Short circuit Release: 845 A (N release) Trip Class: CLASS 10 according to IEC 60947 4 1 Connection System: Screw type terminal Number of Poles: 3 pole Rated Operational Voltage: Up to 690 V AC Rated Frequency: