This FAQ has been written for NEAL (North East Africa and Levant) region. If you are looking for information for another region, please select the correct country from the top-left dropdown in the page and 'Navigate to Browse FAQs' in the Support menu.
MN undervoltage release
The MN release opens the circuit breaker when its supply voltage drops to a value below 35 % of its rated voltage Un.
Undervoltage tripping, combined with an emergency-off button, provides fail-safe tripping.
The MN release is continuously supplied, i.e. if supply is interrupted:
either voluntarily, by the emergency-off button,
or accidentally, through loss of power or faulty wiring,
the release provokes opening of the circuit breaker.
Released for: Schneider Electric Egypt and North East Africa
