Energized receptacle contacts deeply recessed to reduce danger of accidental touching|Shell and extra pole grounding style 2|Spring door keeps dust out of receptacle when plug is not in use, screw cap also supplied|Brass contacts exert constant pressure along entire contact surface and provide superior electrical contact|Contacts have beryllium copper wire springs|Plug mechanical cable clamps prevent strain on cables they meet or exceed UL strain relief pull out requirements|Neoprene bushing compressed by cable collar prevents entrance of water|Insulators provide superior dielectric and mechanical strength and lowest arc tracking|1-1/2 in NPT tapped conduit openings one in top and two in bottom|Interlocked circuit breaker provides interlocked connect and disconnect operation as well as short circuit and thermal time delay overload protection|To operate, insert plug which automatically locks into receptacle and turn breaker handle to On position, to remove plug, turn handle to Off position, lift plug release knob and pull plug out|ACP and CPH plug fits Powertite series hazardous location and DBR receptacles