What this MCCB brings to the panel
The Siemens 3VA2110-7MS36-0BL0 is a SENTRON molded case circuit breaker built for starter protection — meaning it pairs with a contactor to guard motor circuits against short circuits and overloads. Rated 100 A continuous across the full -25 °C to 70 °C operating range, so no derating headache when the cabinet gets hot. Interrupting capacity hits 330 kA at 240 V, 242 kA at 415 V, and still 187 kA at 500 V; at 690 V it drops to 3.7 kA — that last number tells you this breaker is sized for 400 V class distribution, not 690 V motor feeders. Three poles, 300 A minimum to 1 500 A maximum frame rating — the 100 A thermal-magnetic trip is set at the factory. Undervoltage release (UVR) is built in, so if your control voltage drops, the breaker opens without a separate shunt trip module. Auxiliary switch complement is 2 aux switches plus 1 trip alarm and 1 electrical alarm switch HQ — enough to signal status back to a PLC without adding external relays. Power loss runs 12.5 W maximum at rated load — negligible for panel heat budgeting, but worth noting if you're packing breakers tight on a DIN rail. Dimensions are 86 mm deep by 105 mm wide by 181 mm tall, so it fits standard SENTRON 3VA panel footprints.