Arrow Hart 6394 single locking connector. It is Industrial Specification Grade NEMA L11-30R, 3-pole, 3-wire, non-grounding, 30A 250V 3 phase. Cord capacity: 0.375"-1.00". Each is individually packaged; packaging may differ from photos. Features include:
Rugged Fiberglass reinforced nylon body
Clearly marked rating, NEMA configuration and approval listings on receptacle face
One piece brass contacts offer superior performance and minimum heat rise
Back wire terminal clamps for easy secure wiring
Combination head scews - standard-slot/Phillips in the US
