32 A MCCB with TM240 release — line protection for 3-pole panels
The Siemens 3VA1132-3EF36-0JC0 is a SENTRON molded case circuit breaker (MCCB) rated for 32 A continuous current at 40 °C, with a 3-pole configuration and a TM240 thermal-magnetic overcurrent release. It's built for line protection duty — meaning the TM240 handles overloads thermally and short-circuits magnetically, no communication module or ground-fault monitoring on this variant. The interrupting ratings climb to 75.6 kA at 240 V and still hold 10.5 kA at 690 V, so it clears high-fault scenarios across common low-voltage distribution voltages. Front face carries IP40 protection; the housing dimensions are 76.2 mm wide, 130 mm tall, 70 mm deep — standard DIN-rail or screw-mount footprint for a 3-pole MCCB in a panel enclosure.
Derating curve and thermal limits
The 32 A rating holds flat from 40 °C to 50 °C. Above that, it steps down: 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. That 3.2 A drop from 50 °C to 70 °C matters when the breaker sits in a crowded panel next to heat-generating contactors or drives — account for the ambient inside the enclosure, not the room temperature. Operating range spans -25 °C to 70 °C; storage limits are -40 °C to 80 °C. The depth of 70 mm and width of 76.2 mm fit standard 3-pole MCCB mounting footprints — check gland-plate clearance if the panel has shallow back-panel wiring troughs.
Auxiliary and trip options on this variant
Factory-fitted with 2 auxiliary switches (HQ type) and a shunt trip release (STL). The auxiliary release design is identified as 3VA9688-0BL32. Rated insulation voltage is 800 V. Mechanical endurance is listed at 15,000 operations.