The Siemens SENTRON 3VA1132-3EF36-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated for 32 A continuous at 40 °C, using a TM240 thermal-magnetic overcurrent release. It is designed for line protection — meaning it sits upstream protecting a feeder or distribution bus, not a specific motor or device. The 75.6 kA breaking capacity at 240 V gives solid fault-clearing headroom on low-voltage secondary sides; at 415 V it still interrupts 52.5 kA, so it handles high-fault panels without cascading upstream.
Breaking capacity and thermal performance
Breaking capacity drops with voltage: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 11.9 kA at both 500 V and 690 V. That 11.9 kA at 690 V is the limiting case for three-phase 690 V distribution — verify your available fault current stays under that. The thermal curve holds 32 A flat from 40 °C through 50 °C, then derates to 31 A at 55 °C and 60 °C, and 30 A at 65 °C and 70 °C. No derating needed in a typical 40 °C panel, but if the enclosure runs hot, you lose 2 A by 65 °C.
Physical fit and panel integration
Dimensions are 130 mm high, 76.2 mm wide, 70 mm deep. That 70 mm depth is the body only — add handle throw and wiring bend radius when sizing the enclosure depth. The front face carries IP40 protection, so it's fine in a clean indoor panel but not washdown. Rated insulation voltage is 800 V, which covers 690 V distribution with margin. Maximum power loss is 10.6 W — negligible for thermal budgeting in a standard cabinet, but worth noting if you're packing multiple breakers in a sealed enclosure.