The Siemens SENTRON 3VA2010-5HL32-0JA0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying 100 A continuous current (Iu) at 40 °C and delivering 187 kA interrupting capacity at 240 V — enough to handle high-fault utility feeds or large transformer secondaries without cascading upstream. It ships with an ETU320 electronic overcurrent release and a factory-integrated shunt trip (STL) for remote emergency-off or undervoltage tripping, so it pulls double duty as both a feeder breaker and a safety disconnect in one footprint.
What the interrupting ratings mean for your panel
At 240 V the breaker clears 187 kA symmetrical — that's utility-grade fault current, common on the secondary side of a 500 kVA transformer or a large motor-control-center bus. At 415 V and 440 V it still holds 121 kA, and at 500 V it drops to 79 kA. The 690 V rating of 3.4 kA is low, so if your line runs at 690 V phase-to-phase, this is not the right breaker for that bus. The 100 A continuous rating holds flat from 40 °C through 50 °C — no derating needed in a normal warm panel. Above 55 °C it steps down: 96.25 A at 55 °C, 92.5 A at 60 °C, 88.75 A at 65 °C, and 85 A at 70 °C. If the breaker lives near a hot drive cabinet or a steam line, plan for that curve.
Physical fit and panel integration
The 3VA2010-5HL32-0JA0 measures 105 mm wide, 181 mm tall, and 86 mm deep — a standard 3-pole MCCB footprint that bolts directly onto a DIN rail or a mounting plate. The 86 mm depth leaves room behind a 200 mm deep enclosure door for wiring and lug access. Rated insulation voltage is 800 V, so it's comfortable on 480 V or 600 V class systems with margin. Maximum power loss is 13.5 W — negligible for panel heat budgeting, but worth noting if you're packing a dozen of these in a sealed cabinet.