The Siemens SENTRON 3VA1132-4EF32-0AG0 is a 3-pole molded case circuit breaker (MCCB) designed for line protection. Rated at 32 A continuous at 40 °C, it delivers a breaking capacity of 121 kA at 240 V, tapering to 75.6 kA at 415 V and 52.5 kA at 440 V — still 11.9 kA at 690 V. This SCCR profile suits it for high-fault panels where upstream coordination demands a robust interrupting rating across the voltage range.
Thermal-magnetic trip and auxiliary switch fit
The overcurrent release is a TM240 thermal-magnetic type — fixed thermal and magnetic elements, no electronic adjustment. That means the trip curve is set at the factory; if your load profile requires a different curve, this is not the variant to spec. The breaker ships with one auxiliary switch and one trip alarm switch (HP type), so you get a remote status contact and a separate alarm contact for fault indication without adding a module. Rated insulation voltage is 800 V, giving headroom for 690 V line-to-line systems.
Thermal derating and panel space
Current rating holds at 32 A from 40 °C up to 50 °C, then derates to 31 A at 55 °C and 60 °C, and 30 A at 65 °C and 70 °C. If the breaker sits in a warm enclosure near other heat sources, plan for that 2 A drop at the top of the ambient range. Dimensions are 130 mm height, 76.2 mm width, 70 mm depth — standard SENTRON 3VA footprint for a 3-pole frame. Width of 76.2 mm (3 in) matches the typical 3-pole MCCB slot in a panel layout.