The Siemens 3VA1132-6EF32-0AA0 is a SENTRON 3VA1 molded case circuit breaker (MCCB) built for line protection in distribution panels. Three poles, rated 32 A continuous at 40 °C, with a TM240 thermal-magnetic overcurrent release that handles both overload and short-circuit trip curves without an external trip unit. The interrupting rating hits 220 kA at 240 V — enough for high-fault utility feeds or transformer secondaries where the available fault current is substantial.
SCCR and selectivity
At 415 V the interrupting capacity is 154 kA, dropping to 121 kA at 440 V, and 17 kA at 500 V and 690 V. That spread means the breaker stays coordinated downstream of a transformer with a 480 V secondary — the high 240 V rating is what you'd use for the main on a 208Y/120 panel. Rated insulation voltage is 800 V, so the internal clearances are sized for 690 V line-to-line without derating the dielectric.
Thermal derating and panel fit
Rated 32 A from 40 °C through 50 °C, then 31 A at 55 °C and 60 °C, and 30 A at 65 °C and 70 °C. That's a shallow derating curve — you lose only 2 A over the full 30 °C rise — so it holds its rating well in a warm enclosure. The case is 70 mm deep, 76.2 mm wide, 130 mm tall, which fits the standard 3-pole MCCB footprint on DIN rail or a panel-mount base. Front protection is IP40, meaning no gasket needed for a dry indoor panel.