The Siemens SENTRON 3VA2110-7MQ36-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated 100 A continuous across the full ambient range from 40 °C to 70 °C — no derating needed in a warm enclosure.
Breaking capacity — the real fault-handling envelope
This MCCB delivers 330 kA interrupting capacity at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3.7 kA at 690 V. The steep drop above 500 V means the 690 V rating is limited to 3.7 kA — adequate for secondary-side protection on a 690 V distribution but not for high-fault service-entrance duty at that voltage. The 330 kA at 240 V covers most North American panelboard and motor control center applications with generous headroom.
Maximum power loss is 10 W, so ventilation in a sealed enclosure is not critical. The undervoltage release is absent on this variant; if undervoltage protection is needed, that function must be provided externally or by a different order code.
Protection and measurement features
Beyond motor protection and phase failure detection, this breaker includes an other measurement function — energy or power metering via the communication interface.