The Siemens 3VU2932-4AP0 is an undervoltage release designed for the 3VU2.4 and 3VU2.5 series of motor protective circuit breakers. It operates on a 220/250V AC supply and triggers the breaker to open when the line voltage drops below its dropout threshold, protecting downstream loads from brownout conditions or a restart after a power interruption.
Integration Note
This undervoltage release snaps onto the side of the 3VU2.4 or 3VU2.5 breaker within the panel, sharing the same DIN-rail footprint. No additional wiring space beyond the breaker's own terminals is required — the release connects directly to the breaker's internal trip mechanism.