The Siemens SENTRON 3VA2010-5HL32-0KC0 is a 3-pole molded case circuit breaker rated for 100 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. Its interrupting capacity hits 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3 kA at 690 V, so it handles high-fault utility feeds and transformer secondaries without cascading upstream. Designed for line protection, it ships with a shunt trip (STL) and two HQ auxiliary switches, making it ready for remote trip and status feedback in a distribution panel.
Interrupting capacity and selectivity
At 187 kA at 240 V, this MCCB sits in the high-interrupting tier of the SENTRON 3VA line — it clears faults that would weld a lower-rated device closed. The 121 kA at 415 V and 440 V means it holds selectivity with downstream breakers rated up to that fault level, so a branch fault doesn't take the main feeder. At 690 V the interrupting drops to 3 kA, which still covers most motor-circuit faults but not a bolted fault at the transformer secondary.
Integration and mounting
The breaker measures 105 mm wide, 181 mm high, and 86 mm deep — a standard 3-pole MCCB footprint that fits most Siemens SENTRON distribution panels and third-party enclosures with a 105 mm cutout. The supplied basic switch is order code 3VA20105HL320AA0; the two HQ auxiliary switches and shunt trip are factory-installed, so no field assembly of accessories is needed. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. Maximum power loss is 13.5 W.