1. Application

MM1L series earth leakage circuit breakers (hereinafter called MM1L ELCB/RCCB), is a new designed MCCB, developed and manufactured adopting
international advanced technology. MM1L ELCB/RCCB rated insulating voltage AC 800V is suitable for using in the circuit of AC 50Hz /60Hz, rated
voltage 400V, rated working current from16A to 630A to distribute electric power and to protect the line and the equipment from being damaged due to
overload, short current and under-voltage. It can also be used for infrequently switch and starting of motor and for motor overload, short circuit and
under-voltage protections and can protect the electric appliance from dangerous fire dangerous fire caused by ground faulty current due to the
damage of electric appliance insulation.
Internal accessory: shunt release, under voltage release, auxiliary contact, alarm contactsEternal
Accessory: power-driven operation mechanism, turning handle operation mechanism The wiring method has four ways: wiring in front of the board,
wiring on back of the board, insertion type
Installation method: vertically installed and horizontal installed
Breaking capacity: middle type (M) , high type(H)
Arc distance: short arc , long arc
Outside: small volume, pleasing shape
Poles: 3, 4
Frame current: 100、225、400、630、800
Products current: 16、20、25、32、40、50、63、80、100、125、140、160、180、200、225、250、315、400、500、630、700、800A

Standard: ICE60947-2 GB14048.2 low voltage circuit breaker and accessory B with earth leakage currentprotection circuit breaker

2. Main Technical Performance Index