What this MCCB delivers for your panel
The Siemens SENTRON 3VA2010-6HN32-0CC0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current of 100 A and a breaking capacity of 242 kA at 240 VAC — that's the short-circuit current it can safely interrupt without welding contacts or cascading failure upstream. Rated insulation voltage is 800 V, so it's comfortable on 480 V and 600 V class systems. The ETU350 electronic trip unit gives you adjustable overload and short-circuit protection curves, which is what you want for coordinating with downstream breakers in a selective coordination study. It ships with an undervoltage release (UVR) and two auxiliary switches (HQ type) — the UVR will drop the breaker if control voltage falls below a set threshold, a common requirement for safety circuits and emergency-stop chains.
Breaking capacity across voltage levels
Breaking capacity drops as voltage rises: 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 4 kA at 690 V. That 4 kA at 690 V is the limit — if your system runs 690 V with high fault current, this breaker may not be the right fit without a current-limiting upstream device.
Thermal derating and ambient limits
Rated 100 A continuous from 40 °C through 50 °C ambient. Above that it derates: 96.25 A at 55 °C, 92.5 A at 60 °C, 88.75 A at 65 °C, and 85 A at 70 °C. Maximum operating ambient is 70 °C; storage range is -40 °C to 80 °C. If your panel runs hot, size the load side accordingly.
Physical fit and panel integration
Dimensions are 105 mm wide, 181 mm tall, 86 mm deep — standard MCCB footprint for a 100 A frame. Mounts on a DIN rail or directly to a backplate. The 86 mm depth leaves clearance for wiring and busbar connections in a typical 200 mm deep enclosure.