What it is and what it does
The Siemens SENTRON 3VA2110-7MN32-0AF0 is a 3-pole molded case circuit breaker (MCCB) rated for 100 A continuous at 40 °C through 70 °C — no derating needed across that span, which simplifies panel layout in warm enclosures. It's built for motor protection, with phase failure detection built in, and carries a 1 auxiliary switch plus 1 trip alarm switch (HQ design) for status feedback to a PLC or annunciator. The interrupting ratings are substantial: 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. That 330 kA figure at 240 V means it handles high-fault-current scenarios common in industrial distribution without needing an upstream current-limiting fuse — it's sized for the main or large feeder role, not branch-only duty.
Where it goes and how it fits
Dimensions: 105 mm wide, 181 mm high, 86 mm deep. Maximum power loss is 10 W. Operating temperature range is -25 °C to 70 °C, storage from -40 °C to 80 °C. That covers most indoor industrial environments, including unheated warehouses in cold climates, as long as condensation is managed.