Factory Sealed Construction;Compact size and footprint;Plug Interlock Mechanism for Dead-Front construction. Switch cannot be turned“ON” without fully inserted plug. Plugcannot be removed with switch in “ON”position;Factory Wired Receptacle (Load Side)“Off” position is padlockable formaintenance safety;Auxiliary Contact (late-make early-break)contact rated 10 Amp, 1/3 HP at 125/250VAC;Adjustable mounting lugs;Feed-through construction;Horsepower-rated internal switch