The Siemens SENTRON 3VA1132-3EF36-0BA0 is a 3-pole molded case circuit breaker (MCCB) rated 32 A at 40 °C, with a TM240 thermal-magnetic overcurrent release and an integrated undervoltage release. Its 75.6 kA interrupting capacity at 240 V gives it headroom for high-fault service-entrance or distribution panels where the available fault current is substantial.
Breaking capacity and selectivity
At 240 V the breaker clears 75.6 kA; at 415 V it's rated 52.5 kA, dropping to 32 kA at 440 V and 11.9 kA at 500 V and 690 V. Those figures govern the upstream transformer and bus bracing — the 75.6 kA at 240 V means it can sit behind a typical 150 kVA or larger transformer without cascading. The 800 V rated insulation voltage supports 480 V delta or 600 V wye systems with margin.
Thermal derating and panel fit
Rated current holds at 32 A up to 50 °C ambient, then derates to 31 A at 55–60 °C and 30 A at 65–70 °C. In a sealed, uncooled enclosure at 55 °C the breaker still carries 31 A continuous — useful for a crowded panel. Dimensions are 70 mm deep, 76.2 mm wide, 130 mm tall, fitting standard 3-pole MCCB mounting footprints. Maximum power loss is 13.1 W, which factors into enclosure thermal calculations.