The Siemens 3VA2140-5MN32-0HA0 is a SENTRON 3VA2 molded case circuit breaker (MCCB) rated for 40 A continuous at 40 °C across all poles — the same 40 A holds steady through 70 °C ambient, so no derating curve to track for most panel environments. Designed specifically for motor protection, it includes phase failure detection and a shunt trip (STL) auxiliary release for remote tripping. Breaking capacity hits 187 kA at 240 V, 121 kA at 415/440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V — the 690 V figure is low, so verify coordination if that's your service voltage.
Sizing and fit
Three-pole frame, 105 mm wide, 181 mm tall, 86 mm deep — standard 3VA2 footprint that drops into existing SENTRON panel layouts without re-drilling. The shunt trip (STL) release is built in; no undervoltage release on this variant. Power loss maxes at 1.6 W, negligible for thermal budgeting inside a closed enclosure. Operating temperature range -25 to 70 °C, storage from -40 to 80 °C. The 40 A rating is flat across the full operating range — no summer derate to calculate. Trip indicator is absent; the shunt trip provides the remote status signal instead.