The Schneider Electric EZEUVR110AC is an undervoltage release (device short name MN) from the EasyPact range, designed for the EZC250 and EZCV250 circuit breaker families. It operates on a 110-130 V AC 50/60 Hz control circuit voltage, with an opening threshold of 0.35 to 0.7 Un and a closing threshold of 0.85 Un.
The undervoltage release mounts directly into the EZC250 or EZCV250 molded-case circuit breaker, occupying the accessory slot on the breaker's right side. When control voltage drops below 0.35-0.7 Un, the release trips the breaker open; the breaker cannot be reclosed until voltage returns above 0.85 Un. This is standard undervoltage protection for motor control centers and panel feeders where automatic restart after a voltage dip must be prevented.