What this 3VA1110-3EF32-0BC0 is and what it does
The Siemens 3VA1110-3EF32-0BC0 is a SENTRON molded case circuit breaker (MCCB) designed for line protection in distribution panels and motor control centers. It carries a continuous current rating of 100 A at 40 °C ambient, with a thermal derating curve that holds 100 A up to 50 °C before stepping down to 91 A at 70 °C — useful to know if your panel runs hot. The interrupting ratings climb from 75.6 kA at 240 V through 52.5 kA at 415 V down to 11.9 kA at 690 V, so the SCCR headroom depends heavily on your system voltage. It ships with an undervoltage release (UVR) fitted and two auxiliary switches HQ as standard.
Dimensions and panel fit
At 130 mm high, 76.2 mm wide, and 70 mm deep, this 3-pole breaker fits the standard SENTRON 3VA mounting footprint. The 70 mm depth is the body only — allow additional clearance for the undervoltage release module and auxiliary switch wiring at the front. Rated insulation voltage is 800 V, so it can be applied in 690 V systems without de-rating the internal clearances.
