The Siemens SENTRON 3VA1132-3EF36-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated for 32 A continuous at 40 °C, using a TM240 thermal-magnetic overcurrent release. The 75.6 kA breaking capacity at 240 V gives solid fault-clearing headroom on low-voltage secondary sides; at 415 V it still interrupts 52.5 kA, so it handles high-fault panels without cascading upstream.
Breaking capacity and thermal performance
Breaking capacity drops with voltage: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 11.9 kA at both 500 V and 690 V. The thermal curve holds 32 A flat from 40 °C through 50 °C, then derates to 31 A at 55 °C and 60 °C, and 30 A at 65 °C and 70 °C.