Technical data

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Accessories

06313047

The MASTERPACT circuit breaker is equipped with a true two-step stored energy mechanism which

ensures fast opening and closing operations and complete open-close-open sequence without

recharging the mechanism. The MASTERPACT circuit breaker has manual actuators that include a

charging handle and push-to-open and push-to-close buttons. In addition, remote operation is

possible with the following field-installable accessories:

n Spring charging motor (MCH)

n Closing release (XF)

n Undervoltage trip device (MN) or shunt trip (MX) for opening

The manual operating mechanism can still be used in an emergency. The addition of the electrical

operating mechanism does not alter circuit breaker dimensions.

Spring-charging Motor (MCH)

The spring-charging motor automatically charges the stored energy mechanism (when the circuit

breaker closes) making O–C–O cycles possible without recharging. Opening and closing operations

are instantaneous.

Control Voltage (V) 60 Hz 120–240

DC 24–48–125

Consumption AC 180 VA

DC 180 W

Inrush Current 2 to 3 x In for 0.1 sec.

Charging Time 3 to 4 sec.

06313048

262 B4

Spring

Charged

Operation Counter (CDM)

With spring-charging motor option only. The operation counter is read from the front and gives the

total number of circuit breaker operating cycles.

Spring-charged Switch

This type "b" switch is closed when the spring is charged. It comes standard with the spring

charging motor and is provided with a common terminal.

Max. Current (A)

60 Hz 240 V 10

DC 125 V 0.5

250 V 0.25