The Siemens SENTRON 3VA2110-7MN36-0HL0 is a 3-pole molded case circuit breaker (MCCB) designed specifically for motor protection. It carries a full-rated 100 A continuously from 40 °C up to 70 °C — no derating curve to chase in a warm panel. The interrupting capacity hits 330 kA at 240 V, dropping to 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3.7 kA at 690 V. That 330 kA figure at 240 V gives you serious fault-current headroom on low-voltage distribution, but the steep drop at 690 V means it's not a universal high-voltage breaker — keep it on 480 V or below for practical SCCR.
Motor protection & auxiliary wiring
This MCCB is built for motor branch circuits — phase failure detection is built in, and the trip indicator and voltage trigger give you a clear local signal when it opens. The auxiliary switch block carries 2 auxiliary switches, 1 trip alarm switch, and 1 electrical alarm switch (HQ type). That's enough for a remote status and a separate fault indication back to the PLC or DCS. The shunt trip (STL) release allows remote tripping; no undervoltage release is fitted, so if you need UV protection on a motor starter you'll add it externally.
Integration & footprint
Mounts on a standard DIN rail or panel-mount base. Dimensions: 181 mm high, 105 mm wide, 86 mm deep. The 105 mm width is a 3-pole frame — fits the usual SENTRON 3VA2 cutout. The basic switch inside is order code 3VA21107MN360AA0, so if you ever need a replacement switching mechanism the sub-assembly is traceable.