What this MCCB delivers on the line side
The Siemens SENTRON 3VA2010-6HN32-0JA0 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 242 kA at 240 V and still holds 187 kA at 415 V, which puts it in the high-fault tier for a 100 A frame. That kind of SCCR headroom means it can sit ahead of a step-down transformer or a bus feeding multiple drives without worrying about cascading failure upstream. The shunt trip release (STL) is built in for remote emergency-off or undervoltage tripping, though there's no undervoltage release module on this variant.
Panel fit and footprint
At 105 mm wide, 181 mm tall, and 86 mm deep, this MCCB fits a standard 3-pole molded-case footprint. The 86 mm depth is the dimension that matters when you're laying out the gland plate or door clearance — it's shallow enough for most 600 mm deep enclosures without a sub-panel extension. Spring-cage terminals accept 0.2–2.5 mm² solid or ferruled stranded; strip length of 8 mm avoids whiskers under the cage.
Key ratings and what they mean for your coordination study
The 100 A continuous rating is flat across the ambient range — that's unusual for a molded-case breaker and simplifies panel thermal calculations. The 242 kA interrupting capacity at 240 V gives you selectivity headroom downstream: you can coordinate with 65 kA or 100 kA rated branch breakers and still maintain full discrimination. At 690 V the interrupting capacity drops to 3 kA, so this is a 480 V class device in practice. Rated insulation voltage is 800 V, which covers most industrial distribution voltages. Maximum power loss is 13.5 W — negligible for panel ventilation planning.