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What do the suffixes -M, -MW, and -W stand for after part number QMB364?

Product design features

Product Line:
QMB Branch Safety Switches


QMB364 is a 200A Series D2 Obsolete branch switch unit, may be used as replacement 200A switch for obsolete Series 1 thru 4 switches (see Supplemental Digest S&O173, page 13-3, -4).
QMB364M is 200A Main Switch Unit, replaces obsolete Series 4.
QMB364MW is 200A main switch unit, replaces Series E1.
QMB364W is 200A current style Series E branch switch unit.

CTA-ID : 2028427
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