The Siemens SENTRON 3VA2110-7MN32-0BL0 is a 3-pole molded case circuit breaker (MCCB) rated for 100 A continuously at 40 °C, with no derating needed up to 70 °C — the full 100 A holds across the ambient range, which simplifies panel sizing for warm enclosures. Designed specifically for motor protection, it includes an undervoltage release (UVR) and phase failure detection as built-in functions, so it drops the load on loss of phase or a sag below the UVR dropout threshold. The interrupting capacity hits 330 kA at 240 V, tapering to 242 kA at 415/440 V and 187 kA at 500 V — enough for high-fault utility feeds or transformer secondaries.
Auxiliary switch complement and wiring
This MCCB ships with a full auxiliary switch block: 2 auxiliary switches (for status feedback), plus 1 trip alarm switch and 1 electrical alarm switch — four discrete signals total, covering open/closed, trip, and electrical fault. The UVR is the only auxiliary release fitted; there's no shunt trip or ground-fault module on this variant. Panel builders can land the alarm contacts directly into a PLC DI card without adding interposing relays.
Physical fit
Dimensions are 181 mm high × 105 mm wide × 86 mm deep. The 105 mm width is a standard 3-pole MCCB footprint for this SENTRON frame size; it mounts on a DIN rail or panel-mount plate. Depth of 86 mm leaves clearance for rear-mounted busbars or cable ducts in a 200 mm deep enclosure.