The Siemens SENTRON 3VA2110-7MN32-0KH0 is a 3-pole molded case circuit breaker (MCCB) rated at 100 A across the full 40 °C to 70 °C ambient range, making it a solid choice for motor branch circuits in warm enclosures where other breakers would need derating. Its interrupting capacity hits 330 kA at 240 V AC and still delivers 242 kA at 415 V and 440 V, so it handles high-fault utility feeds without cascading upstream. Designed for motor protection (phase failure detection included), it ships with a shunt trip (STL) and carries 2 auxiliary switches plus a trip alarm switch — enough for remote status on a PLC input.
Panel Fit and Mounting
The breaker measures 105 mm wide, 181 mm tall, and 86 mm deep — standard SENTRON 3VA footprint for a 100 A frame, so it drops into existing DIN-rail or screw-mount panel layouts without re-drilling the gland plate. Maximum power loss is 10 W; plan for that thermal load if the breaker is boxed in a sealed sub-panel with other heat sources.
Trip Characteristics and Adjustability
The trip delay is adjustable from 4 s to 17 s — wide enough to ride through motor starting inrush on a heavy load like a conveyor or crusher. A trip indicator and voltage trigger are built in, so a field tech can quickly confirm the breaker tripped on a fault versus being manually opened.