What this MCCB delivers for your line
The Siemens SENTRON 3VA1132-6EF32-0JC0 is a 3-pole molded case circuit breaker (MCCB) rated 32 A at 40 °C, with a breaking capacity of 220 kA at 240 V and 154 kA at 415 V. That kind of interrupting rating means it handles high-fault-current scenarios — think large transformer secondaries or distribution boards close to the utility feed — without needing an upstream current-limiting fuse. The 70 mm depth and 76.2 mm width fit standard panel layouts, and the built-in shunt trip (STL) and two auxiliary switches (HQ) give you remote trip and status feedback without adding external modules.
Breaking capacity and thermal performance
Breaking capacity drops as voltage climbs — 220 kA at 240 V, 154 kA at 415 V, 121 kA at 440 V, and 17 kA at both 500 V and 690 V. For a 400 V distribution panel, the 154 kA figure gives you selectivity headroom over downstream breakers. The thermal rating holds at 32 A from 40 °C up to 50 °C, then derates to 31 A at 55–60 °C and 30 A at 65–70 °C — so in a warm enclosure you lose only 2 A worst-case. Rated insulation voltage is 800 V, covering most industrial systems.
Panel fit and auxiliary options
Mounts on a DIN rail or directly to a backplate — the 70 mm depth leaves room for wiring behind the panel door. The two built-in auxiliary switches (HQ) report open/closed status; the shunt trip (STL) allows remote tripping from a PLC or emergency-stop circuit. No undervoltage release or ground-fault monitoring is included, so if you need those, plan for external modules.