Hubbell Incorporated
Hubbell Incorporated HBL26W81 Watertight Locking Plug L21-20P 20 A 120/208V AC line protection
Watertight industrial locking plug rated 20 A 120/208 V AC with NEMA L21-20P configuration for three-phase power connections
- TypeWatertight Devices
- Watertight seal protects connections in wet environments
- Industrial-grade thermoplastic elastomer housing resists chemicals and impacts
- NEMA L21-20P locking design ensures secure three-phase connection
- Screw terminals accept cables from .375 to .875 inch diameter
- Rated 20 A at 120/208V AC for demanding power applications
Watertight Locking Plug L21-20P
The Hubbell HBL26W81 is a straight-orientation locking plug rated at 20 A and 120/208 V AC three-phase. Its yellow thermoplastic elastomer housing provides chemical and impact resistance with a watertight seal. Five blades and four poles ensure a polarised connection for industrial power distribution. Screw terminals accept cable diameters from .375 in to .875 in.
Industrial Three-Phase Power Connections
This plug suits facilities running 20 A three-phase loads such as motors, welders or temporary generator hook-ups where moisture or chemical exposure is a concern. Installations requiring a different NEMA configuration, higher current rating or single-phase wiring should select an alternative device.
20 A 120/208 V AC Headroom
The device comfortably handles continuous 20 A three-phase loads within its voltage rating. It reaches its limit when current exceeds 20 A or when cable diameter falls outside the .375 in to .875 in range, requiring a larger-conductor or higher-rated plug.
Highlights
- Watertight seal protects connections in wet environments
- Industrial-grade thermoplastic elastomer housing resists chemicals and impacts
- NEMA L21-20P locking design ensures secure three-phase connection
- Screw terminals accept cables from .375 to .875 inch diameter
- Rated 20 A at 120/208V AC for demanding power applications
Specifications
| Brand | HUBBELL |
|---|---|
| Type | Watertight Devices |
Questions about this item
What cable diameter range does the HBL26W81 plug accept for a secure connection?
The plug accepts cables from 0.375 in to 0.875 in diameter, secured by screw terminals inside the thermoplastic elastomer housing.
Will the L21-20P configuration on this plug mate with an existing L21-20R receptacle on my generator panel?
Yes, the 4-pole, 5-blade L21-20P locking interface matches standard L21-20R receptacles for three-phase 120/208V AC service.
How can I confirm the watertight seal is engaged after wiring the plug?
The locking ring clicks into the receptacle groove and the yellow thermoplastic elastomer housing compresses the gasket, giving a visible and tactile seal.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.
