The Siemens 3VA2110-7MN32-0BH0 is a SENTRON molded case circuit breaker (MCCB) designed specifically for motor protection. It is a 3-pole unit rated at 100 A continuously across its full ambient temperature range from 40 °C to 70 °C, meaning no derating is needed for higher panel temperatures — a practical advantage in a crowded enclosure.
Breaking capacity and coordination
The interrupting rating reaches 330 kA at 240 V, stepping down to 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3.7 kA at 690 V. At the 400 V class common in industrial distribution, the 242 kA figure gives substantial headroom for high-fault installations — useful when coordinating with upstream transformers or busway.
Protection and auxiliary complement
Built for motor duty, this MCCB includes phase failure detection and a trip indicator. The auxiliary switch complement is 2 auxiliary switches plus 1 trip alarm switch (HQ), and the design includes an undervoltage release (UVR) — a common requirement for safety circuits that drop the load on loss of control voltage. The UVR is a separate auxiliary release, not a voltage-triggered trip unit.
Physical fit and environment
Dimensions are 181 mm high, 105 mm wide, and 86 mm deep. The 105 mm width is standard for a 3-pole frame in the 3VA platform, so it fits existing panel cutouts and busbar spacing without rework. Operating temperature range is -25 °C to 70 °C; storage range extends from -40 °C to 80 °C. Maximum power loss is 12.5 W.