Eliminate need for adding sealing fittings and compound at each conduit entrance|Smooth, rounded integral bushing in each EFDB hub protects conductor insulation|Accurately tapped, tapered hub threads for tight, rigid joints and ground continuity|Contacts are silver cadmium oxide which are sealed in lower phenolic chamber isolated from corrosive elements, assures positive contact and long, trouble free operation|Enclosed stainless steel helper spring prevents accidental operation of push button in severe vibration installations|Corrosion resistant captive stainless steel hexagonal head cap screws hold EFKB covers to body|Clearly marked terminals with brass screws assure quick, easy wiring|2-circuits|For used in conjunction with contactors or magnetic starters for remote control of motors, classified areas where flammable vapors, gases or highly combustible dusts are present|Malleable iron material|Provide circuit control and/or selection