The Siemens SENTRON 3VA1132-4EF32-0JA0 is a 3-pole molded case circuit breaker (MCCB) rated for 32 A continuous current at 40 °C, with a thermal-magnetic overcurrent release (TM240). Its interrupting capacity hits 121 kA at 240 V AC and 75.6 kA at 415 V AC — high enough for most distribution and motor branch circuits in industrial panels. The shunt trip release (STL) allows remote tripping via a control voltage, which simplifies emergency-stop integration or load-shedding schemes.
Breaking capacity and thermal performance
The 121 kA at 240 V and 75.6 kA at 415 V mean this breaker can safely clear high-fault currents typical near large transformers or busway taps — no need for upstream current-limiting fuses in most panels. At 690 V the capacity drops to 11.9 kA, still adequate for motor circuits with dedicated short-circuit protection. The thermal derating is shallow: it holds 32 A from 40 °C to 50 °C, then drops only to 30 A at 70 °C. That gives headroom in warm enclosures without oversizing.
The 3VA1132-4EF32-0JA0 measures 76.2 mm wide, 130 mm tall, and 70 mm deep — a standard 3-pole MCCB footprint that fits most DIN-rail or screw-mount panel layouts. The shunt trip release (STL) occupies the auxiliary slot, so no extra external relay is needed for remote trip.