Eaton Arrow Hart locking plug , #12-4 AWG, 20A, 30A, Industrial, 600/250V, Black, white, Brass, Ultra grip, Non-NEMA, Three-pole, Four-wire, Nylon
Arrow Hart power lock devices are designed for safety by utilizing a spring loaded shutter on connectors and receptacles to completely isolate energized contacts.
Power lock devices are designed for safety, energizing within a chamber to eliminate the possibility of exterior arcing
Ideal for high-abuse industrial applications