What it is and what it does
The Siemens 3VA1132-4EF36-0AC0 is a SENTRON molded-case circuit breaker (MCCB) designed for line protection in distribution panels. Three-pole, rated 32 A continuous at 40 °C, with a TM240 thermal-magnetic release — meaning the thermal trip element is fixed at 32 A and the magnetic short-circuit pickup is set at 240 A (7.5× In). Interrupting capacity is where this breaker earns its place: 121 kA at 240 VAC, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V. That 121 kA figure at 240 V means it can safely clear a bolted fault on a high-capacity transformer secondary without the arc flashing over — a real concern in industrial switchboards where available fault current runs high.
Integration notes
Panel footprint: 130 mm high, 76.2 mm wide, 70 mm deep — a standard 3-pole MCCB envelope that drops into most DIN-rail or panel-mount distribution blocks without re-drilling. The auxiliary switch configuration is factory-set to 2 HQ auxiliary switches; no field-add kit required for basic status feedback. Insulation voltage rated at 800 V. Power dissipation is 10.6 W maximum. Operating temperature range -25 °C to 70 °C; storage from -40 °C to 80 °C. The current rating holds flat at 32 A up to 50 °C, then derates to 30 A at 70 °C — no surprise for a thermal-magnetic breaker, but worth noting if the panel sits near a furnace or in a hot attic.