What this MCCB is and where it fits
The Siemens SENTRON 3VA1132-6MH32-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated 32 A continuous, built for starter protection — meaning it's sized to sit ahead of a motor contactor or soft starter, not as a main feeder breaker. It uses a TM120M thermal-magnetic overcurrent release, so you get the thermal trip for overloads and the magnetic trip for short circuits in one package. The interrupting capacity at 240 V hits 220 kA, which is high enough for most industrial panelboards with high fault current available. At 415 V it still clears 154 kA, at 440 V it clears 121 kA, and at 500/690 V it drops to 7.5 kA — those higher-voltage ratings tell you this breaker is really at home in low-voltage distribution (up to 480 V nominal) where the fault current is substantial.
Rated current and thermal derating
The breaker holds 32 A from 40 °C up through 50 °C without derating. At 55 °C it drops to 31 A, at 65 °C to 30 A, and at 70 °C to 30 A. That's a clean thermal curve — if your panel ambient runs under 50 °C, you get full 32 A. The maximum power loss is 10.6 W, which is typical for a 32 A MCCB and won't heat up a small enclosure noticeably.
Physical fit and panel integration
It measures 130 mm high, 76.2 mm wide, and 70 mm deep — a compact footprint for a 3-pole MCCB with this interrupting capacity. It mounts on a DIN rail or can be screw-fixed to a backplate. The front face carries IP40 protection, so it's fine inside a closed panel but not for washdown areas. No undervoltage release, no shunt trip, no communication module on this variant — it's a straightforward thermal-magnetic breaker with no auxiliary electronics.