The Siemens SENTRON 3VA2110-7MS32-0KL0 is a 3-pole molded case circuit breaker (MCCB) in the 3VA2 frame, rated 100 A continuous current at 40 °C through 50 °C, with a 330 kA interrupting capacity at 240 V and 242 kA at 415 V. This is a starter protection version — meaning it's built to sit ahead of a motor starter combination, providing both short-circuit and overload protection in one device, rather than a straight feeder breaker.
Shunt trip (STL) is built in, no undervoltage release. No communication module or phase-failure detection on this variant — it's a straight protection device.
Derating and thermal performance
At 55 °C it derates to 96 A, at 60 °C to 94 A, at 65 °C to 92 A, and at 70 °C to 90 A. Maximum power loss is 75 W, which affects enclosure heat rise calculations. Latching endurance is 20,000 operations — a solid mechanical life for a motor-circuit protector.