The Siemens SENTRON 3VA2110-5MQ32-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated for 100 A continuous current across the full 40 °C to 70 °C ambient range — no derating needed up to the maximum operating temperature. Its interrupting capacity at 415 V AC is 121 kA, meaning it can safely clear a fault of that magnitude without upstream devices needing to coordinate. This breaker is designed specifically for motor protection, with integrated phase failure detection and a communication function for remote monitoring or trip indication.
Breaking capacity across voltages
The 3VA2110-5MQ32-0AA0 delivers 187 kA at 240 V, 121 kA at both 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V. The steep drop at 690 V means this breaker is not a good fit for 690 V distribution panels — the 3.7 kA rating is the limiting factor on high-voltage secondary feeds. For most 400 V-class industrial motor circuits, the 121 kA figure gives substantial headroom above typical fault currents.
Panel fit and mounting
Dimensions are 105 mm wide, 86 mm deep, 181 mm tall.
Environmental limits and power loss
Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. Maximum power dissipation is 10 W — negligible for panel thermal calculations but worth noting if grouped tightly with other heat sources. The trip indicator is not present on this variant, so remote signaling relies on the communication function rather than a local flag.