The Schneider Electric EZEUVRN277AC is an EasyPact undervoltage release (UVRN type) designed for internal mounting in EZC250 and EZCV250 circuit breakers. It drops the breaker when control voltage falls below 0.35–0.7 x Un and allows reclosure only above 0.85 x Un — standard undervoltage protection for motor feeders and control circuits that need to stay off after a brownout. The pre-wired auxiliary connection accepts 0–0.5 mm², so it terminates directly into the breaker's internal wiring harness — no separate terminal block needed inside the panel.
This part is marked Obsolete by Schneider Electric.
Internal mounting inside the EZC250 or EZCV250 breaker frame. No DIN rail or panel space consumed — the release clips into the breaker's accessory slot. Verify the breaker's voltage release cavity matches the UVRN form factor before specifying.