Schneider Electric Circuit Breaker MTZ1-1250-L1

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

Check that the circuit breaker is open

Check that the blue fault-trip reset button has popped out

Check that the Ig/IΔn LED is on

Check that the SDE contacts have switched

Reset the circuit breaker after the test

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

Check the following conditions after pushing the test button

Connect PC to Micrologic X control unit

Force state of M2C programmable contacts inputs

Record any issues found during the check

Confirm all connections are secure after testing

Record equipment identification

Check that the device is undamaged, correctly mounted, and securely fastened in the switchboard

Check the 3-phase clearance at terminal blocks

Check that there is no debris remaining at the back of the device housing/enclosure

Check that the ground terminals of the device are securely connected with the correct grounding cables

Check that all external surfaces are undamaged

Rectify any non-conformities, if possible

Refer all equipment non-conformities to asset management

Check electrical continuity for each phase

Check continuity on the power terminals for fixed device

Check continuity on the chassis power terminals for drawout device in connected position

Is the continuity within acceptable range for all phases?

Describe any issues found during the continuity check