Contender® CPS Factory Sealed 20 A Pin and Sleeve Receptacles provide explosionproof protection for stationary or portable equipment in hazardous, damp or corrosive locations. It features delayed action construction; to operate, insert plug to first stop, move Slide-Lok™ slide to the right and push plug fully forward to energize. The Contender® CPS meets all UL and CSA requirements for ground fault protection in hazardous locations when the GFCI cover is used.