The Siemens 3VA1132-6EF32-0DA0 is a SENTRON molded case circuit breaker (MCCB) designed for line protection, rated 32 A continuous current with a TM240 thermal-magnetic overcurrent release. Its 220 kA interrupting capacity at 240 V means it can safely clear high-fault currents in low-voltage distribution without upstream fuses or larger breakers — a key spec for high-SCCR panels where downstream coordination is tight.
Interrupting ratings and current derating
Interrupting capacity drops with system voltage: 220 kA at 240 V, 154 kA at 415 V, 121 kA at 440 V, and 17 kA at both 500 V and 690 V. The 32 A rating holds steady from 40 °C to 50 °C, then derates to 31 A at 55 °C and 60 °C, and 30 A at 65 °C and 70 °C — so in a warm enclosure near the 70 °C operating limit, expect a 2 A reduction.
Built-in undervoltage release
This variant ships with an undervoltage release (UVR) as the auxiliary release, so the breaker trips automatically when supply voltage drops below the release threshold. No separate UVR module to wire in — saves a DIN slot and reduces panel wiring.