"This is a motor mechanism (MCH) for MasterPact NW circuit breakers." "The motor mechanism module is used to remotely open and close the circuit breaker electrically." "It is made up of a spring-charging motor equipped with an opening release and a closing voltage release." "The spring-mechanism charging handle is used only as a backup if auxiliary power is absent." "It is equipped with a 10A limit switch contact (CH) that signals the charged position of the mechanism." "The operational control voltage is 100/130VDC." "The operating threshold is between 0.85xUn and 1.1xUn." "The charging time is less than 4s." "The maximum operating frequency should not exceed 3 cycles per minute."