What this 3VA2110-5MN32-0HH0 is and what it does
The Siemens SENTRON 3VA2110-5MN32-0HH0 is a 3-pole molded case circuit breaker (MCCB) rated for 100 A continuous current across its full ambient temperature range from 40 °C to 70 °C — no derating needed up to that ceiling. It is specifically designed for motor protection, with built-in phase failure detection that catches a lost phase before the motor overheats. The interrupting capacity is the headline number for selectivity studies: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V. That 187 kA at 240 V means it can safely clear a fault on a high-capacity transformer secondary without upstream breakers needing to trip — coordination stays intact.
Deployment context — panel fit and motor branch
This MCCB mounts on a DIN rail or bolts directly into a panel. The 105 mm width and 86 mm depth fit standard SENTRON 3VA cutouts; the 181 mm height clears most enclosure gland plates. It ships with a shunt trip (STL) auxiliary release and two auxiliary switches plus one trip alarm switch HQ — enough for remote status and emergency trip control without adding external relays. The 10 W maximum power loss is low enough that thermal rise in a crowded panel stays manageable — no forced cooling required for this breaker alone. Operating range spans -25 °C to 70 °C, storage from -40 °C to 80 °C, so it handles unheated warehouses and hot machine enclosures alike.
Lifecycle and sourcing reality
This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.