Locking Receptacle, L21-30R, 30 A, 120/208V AC, Three Phase, 4 Pole, Flush Mount, Black

The HUBBELL Locking Receptacle is a 30A, three-phase wye, 120/208V AC twist-lock receptacle intended for use in commercial and industrial settings. It features spring clamp terminals that enable wire termination without the use of screwdrivers or torque wrenches. The device incorporates a high-impact nylon face with color coding by voltage to assist with device identification by voltage.

Key Features of the HUBBELL Locking Receptacle:

• Amperage/Voltage Rating: Rated for 30 A and 120/208V AC, compatible with three-phase applications.


• NEMA Configuration: L21-30R configuration with four poles and five wires; polarized and grounded design.


• Wire Connection Type: Spring clamp terminals are designed to maintain connection integrity during installation.


• Wire Size Compatibility: Accepts solid wire from 14 AWG to 10 AWG, stranded wire from 14 AWG to 8 AWG (including compact stranded).


• Housing Material: Nylon housing constructed with impact-resistant nylon housing; black face color coded by voltage.


• Mount Type: Flush mount design; includes mounting strap and hardware.


• Temperature Range: Operates between -40°F to 167°F maximum operating temperature.


• Certain Ratings & Standards: UL 94 V-2 flammability rating; meets CSA C22.2 and UL 498 standards; NEMA Enclosure Rating of type 1, IP20 rated protection against solid objects greater than 12mm diameter.