Locking Plug, 30 A, 250V AC, 3 Poles, L15-30P, 16 AWG to 8 AWG, Screw Terminals, Black/White, Hubbell, Mfr#: HBL2721$53.89+
NEMA L6-15R 15A 250V 3-Prong Locking Female Connector with UL, C-UL Approval, Ac Works, Mfr#: ASL615R$19.45+
NEMA L21-20R 20A 3-Phase 120/208V 3PY, 5-Wire Locking Female UL, C-UL Approval in Orange, Ac Works, Mfr#: ASL2120R$31.59+
NEMA L21-30P 30A 3-Phase 120/208V 3PY, 5-Wire Locking Male UL, C-UL Approval in Orange, Ac Works, Mfr#: ASL2130P$31.25+
Locking Devices, Twist-Lock®, Marine Grade, Female Connector Body, 3-Phase Delta 250V AC, 3-Pole 4-Wire Grounding, L15-20R, Screw Terminal, Yellow, Hubbell Wiring Device-Kellems, Mfr#: HBL24CM23$63.86+
Locking Devices, Twist-Lock®, Valise, Male Plug, 20, 250V, 2-Pole 3-Wire Grounding, L6-20P, Screw Terminal, Yellow, Hubbell Wiring Device-Kellems, Mfr#: HBL2321VY$16.39+
Flanged Locking Receptacle, L14-30R, 30 A, 125/250V AC, Single Phase, 3 Pole, Flush Mount, Black$59.19+