The Schneider Electric EZESHT024DC is a shunt trip release (SHT) from the EasyPact range, designed for the EZCV250 / EZC250 family of circuit breakers. It operates on a 24 V DC control circuit and trips the breaker when the control voltage drops to 0.7 times the rated voltage (0.7 Un). This is a control accessory, not a standalone breaker — it mounts inside the EZC250 enclosure and connects via lead wires to an external trip signal source like an emergency stop button or a relay output from a safety controller. The 0.7 Un tripping threshold means the release activates when the control voltage falls to about 16.8 V DC (0.7 × 24 V). This is a standard undervoltage-release characteristic — useful for applications where a loss of control power should automatically open the breaker, such as in emergency-off circuits or when a safety relay drops out. The lead-wire termination (two flying leads) simplifies field wiring into a terminal block or directly to a contactor coil circuit.
Mounting is inside the EZC250 breaker's accessory slot — no DIN-rail footprint of its own. The two lead wires exit the breaker housing and terminate in the panel. Verify the control circuit polarity (24 V DC) before connecting; a reversed DC supply won't damage the coil but the release won't hold in. The trip threshold is fixed at 0.7 Un — there is no adjustment.