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At what voltage does a UVR (undervoltage release) trip a breaker?
Issue:
What voltage drop is required for a UVR to trip a breaker?

Product Line:
Circuit Breakers

Resolution:
The UVR is guaranteed to let the breaker hold above 70% Vn and is guaranteed to trip the breaker below 35% Vn. The trip point would be somewhere between 35 and 70% Vn.

Schneider Electric USA

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