The Siemens 3VA2110-7MN36-0AJ0 is a SENTRON molded case circuit breaker (MCCB) rated for 100 A continuous current across its full ambient temperature range from 40 °C to 70 °C, meaning no derating is needed in a warm panel — it holds 100 A all the way up. Designed specifically for motor protection, it includes phase failure detection and a trip indicator, so it catches a lost phase before the motor burns out.
Short-circuit ratings and selectivity headroom
This 3-pole MCCB carries a short-circuit breaking capacity of 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3.7 kA at 690 V. At typical industrial distribution voltages (415 V), the 242 kA SCCR gives substantial headroom for high-fault panels — you can coordinate it downstream of a main breaker without worrying about cascading failure.
Maximum power loss is 10 W, which is modest for a 100 A breaker; ventilation in a standard enclosure handles it without forced cooling.
Auxiliary switching and monitoring
The trip indicator on the front confirms the trip cause locally.