Leviton Black & White Locking Plug — 20A, 347V, 2-Pole 3-Wire
The Leviton 3721 is part of the industry-leading Black & White series of industrial-grade 347V locking devices. Rated at 20 amps and 347V AC, this 2-pole, 3-wire locking plug is designed for superior performance, long-lasting reliability, and is backed by a lifetime warranty.
Specifications
- Current rating: 20A
- Voltage: 347V AC
- Configuration: 2-Pole, 3-Wire
- Type: Locking plug
- Wire range: 16 to 10 AWG
- Connection type: Screwed terminal
- Material: Impact-modified nylon
- Color: Black/White
- Dimensions: 2.47 L x 2.08 in. Dia.
- Standards: NEMA WD-6
Features
- Industrial-grade 347V rating for demanding applications
- Locking design prevents accidental disconnection
- Impact-modified nylon construction for durability
- Accepts 16 to 10 AWG conductors
- Screwed terminal connections for secure wiring
- Lifetime warranty backed by Leviton
Applications
Designed for industrial facilities, manufacturing plants, and commercial buildings utilizing 347V power systems. Commonly used in Canadian and special-use electrical systems where 347V single-phase power is distributed to lighting and equipment loads.







