What this MCCB is and what it does
The Siemens 3VA2110-7MS32-0AD0 is a SENTRON molded case circuit breaker (MCCB) rated for 100 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. Its interrupting capacity reaches 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 — the steep drop above 500 V means you verify the available fault current at the point of installation before committing the BOM line. The design is explicitly for starter protection, so it is sized to sit ahead of a motor starter combination — not a general distribution feeder — and carries three auxiliary switches HQ as standard.
Dimensions and panel fit
The 3VA2110-7MS32-0AD0 measures 86 mm deep, 105 mm wide, and 181 mm tall — a 3-pole MCCB footprint that fits standard SENTRON panel cutouts and busbar spacing. Maximum power loss is 10 W; plan for that thermal load inside the enclosure, especially when multiple breakers are ganged. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C.