M3 Moulded Case Circuit Breaker

M3 series moulded case circuit breakers are suitable for infrequent conversion and infrequent starting of motors in circuits with AC 50/60Hz, their rated insulation voltage up to 1000V, rated working voltage 415/690V and rated working current up to 800A (Inm≤400A and below).

The M3 MCCB has the function of overload and short-circuit protection and can protect the line and power supply equipment from damage. With small volume, high breaking capacity, short flying arc, vibration resistance, etc, it can be installed vertically (i.e. vertically mounted) or horizontally.