Where an interlocked disconnect switch is desired to control a Powertite receptacle and insertion or removal of plug|Interlock prohibits plug insertion or removal under load|Plug is secured in place by interlock and cannot be withdrawn unless interlock release lever is actuated|Spring door standard and screw cap provided at no additional cost to meet NEMA 3/3R/4/4X applications|Insulated, dual-color polymer operating handle clearly indicates the switch being energized|Ergonomically designed handle is made of high-impact polymer material for exceptional ruggedness, durability and corrosion resistance|Utilizes Style 2 (shell and extra pole) grounding and 3-wire, 4-pole receptacle wiring|Class R fusing standard on WSRD units|Product can be retrofitted with class J, K or S fusing|Short circuit withstand rated to 200,000 RMS symmetrical amperes (class R and J fusing)|Unit is equipped with defeatable door interlock which allows emergency access when switch is energized|Cover can be padlocked closed|Operating handle can be locked in the OFF/ON position|Dead front design receptacle is not energized until plug is fully inserted and switch is engaged|4 to 1/0 AWG wire