The Siemens SENTRON 3VA1110-3EF36-0BH0 is a 3-pole molded case circuit breaker rated for 100 A continuous current with a TM240 thermal-magnetic release. It's configured for line protection — the primary role is protecting cables and distribution buswork from overloads and short circuits, not motor or generator protection. The interrupting ratings are 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 10.5 kA at 690 V, which means it can safely clear fault currents up to those levels at the respective system voltages without rupturing or welding contacts. The 100 A rating holds flat from 40 °C through 50 °C ambient; above that it derates to 96 A at 55 °C, 94 A at 60 °C, 92 A at 65 °C, and 90 A at 70 °C — the derating curve matters if this breaker lives in a crowded enclosure with other heat sources.
Physical fit and panel integration
The breaker measures 130 mm high, 76.2 mm wide, and 70 mm deep. That 76.2 mm width on a 3-pole frame is a standard 3-module footprint for SENTRON 3VA breakers — it clips onto the mounting plate or DIN rail adapter without eating extra width. The IP40 protection on the front face means it's protected against tools and wires >1 mm entering the front, but the enclosure itself must provide the overall panel IP rating. The auxiliary contact block is populated as 2 auxiliary switches plus 1 trip alarm switch (HQ type), which gives separate N/O and N/C status for the main contacts and a dedicated alarm on trip — useful for feeding a PLC input or annunciator without sharing contacts.