The Siemens SENTRON 3VA1010-3ED32-0HH0 is a 3-pole molded case circuit breaker (MCCB) rated for 100 A continuous current at 40 °C, with a TM210 thermal-magnetic overcurrent release and an integrated shunt trip (STL). It delivers 75.6 kA interrupting capacity at 240 V and 52.5 kA at 415 V, making it a strong candidate for main or feeder protection in commercial and light industrial distribution panels where high fault current is a concern.
What the breaking capacity numbers mean for your panel
At 240 V this breaker clears 75.6 kA — that's the SCCR you can count on for a main lug or main breaker panel fed from a large transformer. At 415 V the rating drops to 52.5 kA, and at 440 V it's 32 kA. If your service entrance fault current is above 52.5 kA at 400 V class, you need a higher-rated frame or a current-limiting upstream device. The 690 V rating of 7.5 kA is a formality — nobody uses a 100 A MCCB at 690 V for primary protection.
Thermal derating and continuous current
The breaker holds 100 A continuously from 40 °C up to 50 °C without derating. At 55 °C it steps down to 96 A, and at 70 °C it's 90 A. If you're stuffing this into a crowded enclosure with other heat sources, factor the ambient around the breaker — not the room ambient. The 800 V rated insulation voltage (Ui) gives headroom for 480 V systems without concern.
Auxiliary contacts and trip indication
The breaker ships with 2 auxiliary switches plus 1 trip alarm switch (HQ configuration). The trip alarm signals on a fault trip, not a manual open — useful for remote fault annunciation or shutting down upstream gear. The front-mounted voltage trigger and mechanical trip indicator give local status without opening the door.