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What is the difference between the NEMA 12 safety switch enclosures, for example the H363A and H363AWK?

Issue:
Design features

Product Line:
Heavy Duty Safety Switches

Environment:
NEMA Ratings

Cause:
Application

Resolution:
They are both NEMA 12 enclosures, but the 'A' suffix indicates Nema 12 enclosure WITH knockouts, while the 'AWK' suffix indicates Nema 12/3R enclosure WITHOUT knockouts.

NOTE: to use the 'AWK' version for NEMA 3R, the drain screw in the bottom endwall of the enclosure MUST be removed upon installation.

 
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