Reduce installation problemsEliminate external sealsLower installation costsImprove safetyAre used with general purpose snap and pushbutton type switchesStandard neoprene covers for front operated pushbuttons, prevents accumulation of dirt and entrance of water around operating shaftsMounting lugs and taper tapped hubs with integral bushingsLarge machine screws for fastening covers to bodiesLockout provisions on front operated pushbutton (marked "STOP" and "OFF") and selector switch coversLockout hole for padlock having 1/4 in hasp is provided when used with covers for front lever and side rocker type operationClose tolerances in machining of wide, mating flanges and journalled shafts and bearings for front button operation, produces flame tightness of enclosure jointsOn enclosures with front lever and side rocker type operating handles, threaded type shafts and bushings are used to ensure flame tightnessDust-ignitionproof, raintightTo prevent arcing of enclosed device from causing ignition of a hazardous atmosphere external to the enclosureIn conjunction with magnetic starters or contactors for remote control of motorsFor manual starting of small AC/DC motorsTo provide manual starting and stopping and motor running protection (with heater)3/4 in hub3-way