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Black and white industrial locking plug with ribbed nylon housing and integral dust shield

Hubbell Incorporated

Hubbell HBL2811 Locking Plug L21-30P 30A 120/208V AC

SKU CH-NJNK-80X6N

A 30 A, 120/208 V AC locking plug with L21-30P configuration, ribbed nylon housing, integral dust shield and screw terminals for 16 to 8 AWG wire

  • TypeLocking Devices
  • ColorBlack/White
  • Rated 30 A for three-phase 120/208V AC power
  • NEMA L21-30P 4-pole 5-wire grounded configuration
  • Ribbed nylon housing resists impact and chemicals
  • Integral dust shield limits debris in wiring chamber
  • Accepts 0.350" to 1.150" cord diameters

Industrial three-phase locking plug

The Hubbell HBL2811 is a NEMA L21-30P locking plug rated for 30 A at 120/208V AC. Its 4-pole, 5-wire grounded design suits three-phase power systems in indoor dry locations. The ribbed nylon housing resists impact and chemicals while improving grip during installation or removal. An integral dust shield limits intrusion into the wiring chamber.

Verify cord and wire compatibility

Before ordering, confirm your portable cord diameter falls between .350" and 1.150". Ensure the conductors are stranded copper sized from 16 AWG to 8 AWG for the screw terminals. Check that the application stays within the operating range of -40°C without impact up to a maximum continuous temperature of 75°C. The plug is intended for indoor dry locations only.

Ribbed housing and dust shield improve handling

The ribbed nylon exterior gives a secure grip when mating or unmating the connector under load. The integral dust shield helps keep the wiring chamber clean during installation and service. Screw terminals accept the stated wire range without requiring specialised crimp tools. The housing material meets a minimum dielectric strength of 2,000V and provides flammability resistance.

Highlights

  • Rated 30 A for three-phase 120/208V AC power
  • NEMA L21-30P 4-pole 5-wire grounded configuration
  • Ribbed nylon housing resists impact and chemicals
  • Integral dust shield limits debris in wiring chamber
  • Accepts 0.350" to 1.150" cord diameters

Specifications

BrandHubbell Wiring Device-Kellems
ModelHBL2811
TypeLocking Devices
ColorBlack/White

Questions about this item

Does the HBL2811 plug come with a cord or do I need to supply my own cable?

The plug accepts cord diameters from .350" to 1.150" and wire sizes #16 AWG to #8 AWG stranded copper; you must provide a compatible portable cord.

Which NEMA configuration matches the HBL2811 for my three-phase circuit?

This model is an L21-30P locking plug with 4 poles and 5 wires, grounded, rated 30 A at 120/208V AC for three-phase systems.

What does the 30 A rating mean when the plug is installed in a panel?

It indicates the maximum continuous current the device can carry at 120/208V AC within its -40°C to 75°C operating range and 2000V dielectric strength.

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