The Siemens 3VA2110-5HL36-0HC0 is a SENTRON 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 that ceiling. Three poles, line-protection design, with a shunt trip (STL) and two HQ auxiliary switches built in. Interrupting capacity hits 187 kA at 240 V, 121 kA at 415 V / 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V, so it handles high-fault utility feeds and transformer secondaries without cascading upstream.
Panel fit and mounting
Footprint is 105 mm wide, 181 mm tall, 86 mm deep — standard for a 3-pole 100 A frame in the 3VA2 family. Mounts on a DIN rail or directly to a backplate; the 86 mm depth leaves clearance behind a 200 mm deep enclosure gland plate. Shunt trip and auxiliary switches are factory-integrated, so no add-on modules eat extra DIN space.
