What this MCCB is and what it does
The Siemens SENTRON 3VA2110-6HM36-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated at 100 A continuous current, with no derating needed across its full operating temperature range of -25 °C to 70 °C — it holds 100 A from 40 °C all the way up to 70 °C, so you don't have to oversize for a warm panel. It's fitted with the ETU330 electronic trip unit, a line-protection release that gives you adjustable overload and short-circuit settings — not a thermal-magnetic fixed curve, so you can dial in coordination with downstream breakers without swapping the whole device. The interrupting ratings are the headline: 242 kA at 240 V AC, 187 kA at both 415 V and 440 V, 121 kA at 500 V, and 3.7 kA at 690 V. That 242 kA at 240 V means it can safely clear a fault on a high-capacity transformer secondary without the arc flashing over — a real consideration for industrial services where the available fault current is north of 100 kA.
Panel fit and integration
The 3VA2110-6HM36-0AA0 measures 105 mm wide, 181 mm tall, and 86 mm deep — a standard 3-pole MCCB footprint that drops into a SENTRON distribution panel or a standalone enclosure without re-drilling the mounting plate. Front face is rated IP40, so it's protected against tools and wires >1 mm but not against water ingress — mount it inside a panel with a door, not in a washdown zone. Optional motor drive available, meaning you can add remote motorized operation later without replacing the breaker — useful for a PLC-controlled shutdown sequence.