The rated insulating voltage is 750V, suit-able for AC 50Hz(60Hz),rated working voltage 690V or below, AM2 series moulded case circuit breaker is one of breaker which adopts international ad-vanced design, manufacture technology to develop. The rated insulating voltage is 750V, suit-able for AC 50Hz(60Hz),rated working voltage 690V or below, rated working current is 12.5A to1250A of circuit and ...