Hubbell Wiring Device - Hubbell HBL21420 30 Amp 600 Volt 3-Pole 4-Wire Locking Flanged Receptacle

Locking Devices, Hubbellock®, Industrial, Flanged Receptacle, 30A 600V AC, 20A 250V DC, 3-Pole 4-Wire Grounding, Non- NEMA, Screw Terminal, Cast Aluminum angle housing, with 3/4" N P T hub for surface mounting, Metallic Features: Spring loaded safety shutter contains arcing when mating or un-mating devices under load; Spring loaded safety shutter automatically ejects the plug eliminating contact teasing; Box terminals in conjunction with screws with pressure pads provide maximum termination strength and dependability; Angled housing reduces the profile of the device and makes mating and un-mating easier; Metallic weather protective spring loaded cover provides protection from moisture and dust; Auto Ejects Improperly Made Connection