The Siemens SENTRON 3VA1032-3ED42-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for 32 A continuous current, designed for line protection in distribution panels and motor control centers. It lands on the critical path for any panel build where a compact, high-interrupting-capacity breaker is specified — the 70 mm depth and 101.6 mm width fit standard DIN-rail or panel-mount layouts without forcing a larger enclosure.
Ratings and what they mean for fit
The 32 A continuous rating holds across ambient temperatures up to 50 °C without derating — above that it drops to 31 A at 55 °C and 30 A at 65 °C, so a panel running hot near the top of the enclosure may need to step up one frame size or verify the thermal curve against the actual load. Interrupting capacity is 75.6 kA at 240 V, 52.5 kA at 415 V, and 32 kA at 440 V — these figures govern selectivity and SCCR coordination downstream. At 500 V and 690 V the rating drops to 7.5 kA, so the breaker is best applied on 240–480 V systems where its full interrupting capability is available. The TM210 overcurrent release combines a thermal-magnetic trip with a fixed time-delay curve — it's the standard choice for feeder and branch-circuit protection where no electronic adjustment or communication is needed. Insulation voltage is rated 800 V, giving headroom for 690 V line-to-line systems. Power loss is 10.6 W maximum — that's the heat the breaker dissipates at full load, which matters for enclosure thermal calculations when multiple breakers are ganged in a small panel.
Where it goes in the panel
This MCCB mounts on a DIN rail or directly to a panel backplate. The 70 mm depth leaves room behind the gland plate for wiring and busbar connections without crowding the enclosure door. Four poles let it switch three-phase plus neutral, or serve as a four-wire disconnect for a sub-distribution board. No undervoltage release, no shunt trip, no communication module — this is a plain thermal-magnetic breaker. If the BOM calls for remote trip or status feedback, you need a different variant in the 3VA family.