The EZAUVR110AC is an undervoltage release (UVR) for Schneider Electric's EasyPact EZC100 and CVS100BS molded-case circuit breakers. It drops the breaker when the control voltage falls below the operating threshold of 0.35…0.7 Un, and re-closes once voltage returns above 0.85 Un. The 50 ms response time means it reacts fast enough to protect downstream equipment from a brownout or sag without nuisance-tripping on momentary dips.
Fit & integration
The release snaps into the accessory slot on the EZC100 or CVS100BS breaker — no separate DIN-rail mount needed, so panel fill factor stays tight. Control circuit voltage is 110…130 V AC 50/60 Hz; verify your control transformer taps match that range before wiring. The operating threshold curve (0.35…0.7 Un drop-out, 0.85 Un pick-up) is standard for undervoltage protection: it keeps the breaker closed through normal line fluctuations but clears on a sustained sag.