What it is and what it does
The Siemens 3VA1132-3EF36-0KC0 is a SENTRON 3VA molded case circuit breaker (MCCB) rated for 32 A continuous current on a 3-pole frame, fitted with a TM240 thermal-magnetic release and a shunt trip (STL) auxiliary release. It's a line-protection device — meaning it's sized to protect feeders and downstream distribution, not a specific motor or drive branch. Breaking capacity is 75.6 kA at 240 V AC, 52.5 kA at 415 V, 32 kA at 440 V, and 10.5 kA at 690 V — numbers that matter for fault-current coordination studies. The 800 V rated insulation voltage (Ui) gives headroom on 690 V systems. Thermal derating is flat from 40 °C to 50 °C at 32 A, then drops to 30.72 A at 55 °C, 30.08 A at 60 °C, 29.44 A at 65 °C, and 28.8 A at 70 °C. If your panel ambient runs above 50 °C, you lose about 1 A per 5 °C rise — factor that into the load calculation.
Integration and mounting
Footprint is 76.2 mm wide, 130 mm tall, 70 mm deep — standard 3VA frame size that fits the SENTRON mounting base and busbar system. Front IP40 protection handles typical panel environments; no washdown rating, so keep it behind the gland plate. Comes with 2 auxiliary switches (HQ type) and a shunt trip release (STL) as standard — the integrated auxiliary trip order code is 3VA9688-0BL33. No undervoltage release, no phase-failure detection, no communication module on this variant. The voltage trigger is present, so it can be wired for remote trip via the shunt coil.