What this MCCB delivers at the panel
The Siemens SENTRON 3VA2110-5HN32-0DF0 is a 3-pole molded case circuit breaker rated for 100 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. That flat thermal curve simplifies panel sizing: you don't have to oversize the frame for a warm enclosure. The interrupting ratings are the headline here. At 240 V it clears 187 kA; at 415 V and 440 V it holds 121 kA; at 500 V it's still 76 kA. Only at 690 V does it drop to 3.8 kA — that's the edge of the frame's capability for high-voltage distribution. For most 400 V-class industrial panels, the 121 kA figure gives generous SCCR headroom without needing a current-limiting upstream device. It carries the ETU350 electronic trip unit, which means adjustable long-time (tr 0.5–17 s), short-time (tsd 0.02–0.4 s), and instantaneous pickup — selectivity tuning is practical without swapping trip packs. The 20 000-cycle mechanical endurance is standard for this frame class; it's not a switching device, but it handles routine isolation without wearing out prematurely.
Footprint and integration
Dimensions are 105 mm wide, 181 mm high, 86 mm deep — a 3-pole MCCB that fits standard Siemens SENTRON mounting accessories. The IP40 front protection means it's suitable for enclosed panel mounting where the door provides the seal; not rated for washdown or outdoor exposure. Rated insulation voltage is 800 V, so it's comfortable in 690 V line-to-line systems as long as the interrupting capability at that voltage (3.8 kA) matches the available fault current. Storage range spans -40 °C to 80 °C; operating range is -25 °C to 70 °C.