MCCB for line protection — 100 A continuous, 440 kA interrupting at 240 V
The Siemens SENTRON 3VA2110-8JQ46-0AA0 is a 4-pole molded case circuit breaker designed for line protection. It carries a rated continuous current of 100 A across the full operating temperature range from -25 °C to 70 °C, with no derating needed up to 70 °C. The interrupting capacity is 440 kA at 240 V, dropping to 330 kA at 415 V and 440 V, 220 kA at 500 V, and 52.5 kA at 690 V — these numbers govern the available fault current the breaker can clear without failure. Rated insulation voltage is 800 V. This breaker includes a communication function and ground-fault monitoring via summation current formation on the L + N conductor. Maximum power loss is 7.7 W. Dimensions are 86 mm deep, 140 mm wide, 181 mm high — fits standard panel mounting.