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How is the cover interlock mechanism defeated on a 400A, 600A, 800A or 1200A QMB switch?

Issue:
Maintenance

Product Line:
QMB

Environment:
Maintenance

Cause:
Defeat cover interlock mechanism

Resolution:
To defeat the cover interlock mechanism to allow access into the interior of the switch while the switch is in the ON position:
Locate the 3/8" slot located on the switch flange (see Photo 1).
Insert a small bladed screw driver approximately 1/4" into the slot. While the screw driver is inserted in the slot, pivot the cover padlock hasp to open the cover (see Photo 2)
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