Watertight Locking Plug, L21-30P, 30 A, 120/208V AC, Three Phase, 4 Pole, Screw Terminals, White

The HUBBELL 30A Watertight Twist-Lock Plug is a shrouded, industrial-grade locking plug suitable for environments requiring resistance to moisture, dust, and weather. It features a four-pole, five-wire configuration with a NEMA L21-30P plug type and supports three-phase power at 120/208V AC. The plug features an impact-resistant housing and shroud intended to cover internal components during connection or disconnection under load.

Key Features of the HUBBELL 30A Watertight Locking Plug:

• Current/Voltage Rating: Rated for 30 A at 120/208V AC (three-phase).


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


• IP66 rated for water ingress and chemical resistance.


• Material Construction: Impact modified PBT housing; brass blades and contacts; stainless steel screws; clear polycarbonate retainer.


• Cord Accommodation: Accepts cord diameters from 0.35 in to 1.15 in; suitable for wire sizes between 16 AWG and 8 AWG using screw terminals.


• Operating Temperature Range: -40°C to +75°C maximum operating temperature (housing rated up to +60°C).


• Flammability & Standards: UL94 V-0 flammability rating; CSA Certified Type 4, UL Listed.


• Special Features: Shrouded construction covers contact points; cord grip is designed to secure the cable at the point of entry.