Replacing An Auxiliary Contact For An Mcb - Huawei FusionPower6000 Maintenance Manual

FusionPower6000
Maintenance Guide
Step 3 Mark the corresponding port names on the cables, use a Phillips screwdriver to
loosen the wiring terminals, and remove the cables.
Step 4 Press down the clip ring and remove the MCB.
Figure 6-22 Removing an MCB
Step 5 Check that the new MCB is OFF.
Step 6 Install the new MCB and reconnect the cables.
Step 7 Turn on the upstream switch or reinstall the fuse for the MCB.
Step 8 Switch on the MCB.
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6.15 Replacing an Auxiliary Contact for an MCB

Prerequisites
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Procedure
Step 1 Switch off the MCB connected to the auxiliary contact.
Step 2 Mark the corresponding port names on the cables, use a flat-head screwdriver to
loosen the wiring terminals, and remove the cables.
Step 3 Separate the auxiliary contact from the MCB and press down to remove the
auxiliary contact.
Issue 02 (2022-07-18)
Tools: insulated gloves, flat-head screwdriver, step ladder
Material: a new and intact MCB auxiliary contact of the same model
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