Schneider Electric Circuit Breaker MTZ1-630-H1

Condition of Connections and Auxiliaries

Check device mounting and connection tightness

Verify correct installation of all auxiliaries and accessories

Remove the MCH gear motor power supply

Perform an opening/closing/opening cycle to discharge the mechanism

Check electrical continuity between terminals B1 and B2

Check electrical non-continuity between terminals B1 and B3

Reconnect the MCH gear motor power supply

Check electrical continuity between terminals B1 and B3

Operate the device several times to ensure the spring mechanism automatically recharges after every closing operation

Power the Micrologic X control unit

Check the Micrologic X Ready LED status

If the Ready LED is not flashing green, refer to chapter Critical Cases

Check electrical continuity for each phase

For fixed device: Check continuity on the power terminals

For drawout device: Check continuity on the chassis power terminals with the device in the connected position

Record any anomalies found during the continuity check

Verify all tools and equipment are removed from the work area

Sign off on the completion of the procedure

Use a thin screwdriver to briefly push in (<1 s) the test button on the control unit

Check the following conditions after pressing the test button