0614IB1701

Resetting Masterpact MTZ Devices

Conditions Required to Reset

After a trip, the device must be reset before it can be closed.

Resetting is possible in all control modes.

Resetting the Masterpact MTZ2/MTZ3 Mechanism

The device can be reset in different ways, according to the device configuration and its accessories:

Type of Resetting

Accessories

Resetting Action

Mechanical

Push in the fault-trip reset pushbutton on the front of the device. This resetting action is always possible. Pushing in the fault-trip reset pushbutton resets the overcurrent trip switch (SDE), and allows the device to be closed.

Automatic
(RAR automatic reset)

XF communicating or standard shunt close

After a trip, RAR automatic reset allows the device to be closed without the fault-trip reset pushbutton being pushed in. The use of the XF shunt close is required with this option.

The mechanical indicator and the overcurrent trip switch (SDE) remain in detected fault position.

To reset the overcurrent trip switch (SDE) and the mechanical indicator, push in the fault-trip reset pushbutton

MCH spring charging motor

By external pushbutton

External pushbutton

Press the external pushbutton which is connected to the RES electrical remote reset via the customer terminal block.

The use of the XF shunt close is required with this option.

The RES electrical remote reset resets theovercurrent trip switch (SDE) and the mechanical indicator, and allows the device to be closed.

NOTE: The electrical remote reset (RES) cannot be installed if the SDE2 is already installed.

RES electrical remote reset

XF communicating or standard shunt close

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