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Black and white watertight locking plug with twist-lock design and shrouded blades

Hubbell Incorporated

Hubbell Incorporated HBL2311SW Watertight Locking Plug L5-20P 20 A 125V IP66

SKU CH-Q92A-J8Y2R

A watertight locking plug rated 20 A at 125 V with IP66 protection, twist-lock security, and screw terminals for 16–8 AWG cord

  • TypeWatertight Devices
  • ColorBlack/White
  • Watertight IP66 enclosure protects against moisture and dust
  • Twist-lock mechanism reduces accidental disconnection under load
  • Impact-resistant PBT housing withstands harsh conditions
  • Operates from -40°C to +75°C temperature range
  • Accepts 16 AWG to 8 AWG wire sizes

Hubbell HBL2311SW Watertight Locking Plug

The Hubbell HBL2311SW is a new L5-20P locking plug rated for 20 A at 125V AC. It provides a polarized and grounded connection with an IP66 enclosure that protects against moisture, dust and weather exposure. The twist-lock mechanism reduces accidental disconnection and limits arcing when connecting or disconnecting under load. Suitable for industrial, commercial or outdoor power distribution where a secure, weatherproof plug is required.

Who this suits and who should look elsewhere

This plug suits installers and maintenance teams needing a 20 A, 125V connection that withstands wet, dusty or chemically harsh environments from -40°C to +75°C. It accepts cord diameters from .36 in to .93 in and wire sizes 16 AWG to 8 AWG. Buyers who need a different voltage, amperage or NEMA configuration should look elsewhere, as this model is fixed at L5-20P.

IP66 watertight rating for harsh environments

The single specification that decides fit is the IP66 rating, confirming the enclosure resists powerful water jets and dust ingress. Combined with UL94 V-0 materials, PBT housing, brass blades and stainless steel screws, it ensures reliable operation in the stated temperature range. If the application does not demand this level of environmental protection, a standard non-watertight plug may be more appropriate.

Highlights

  • Watertight IP66 enclosure protects against moisture and dust
  • Twist-lock mechanism reduces accidental disconnection under load
  • Impact-resistant PBT housing withstands harsh conditions
  • Operates from -40°C to +75°C temperature range
  • Accepts 16 AWG to 8 AWG wire sizes

Specifications

BrandHubbell Wiring Device-Kellems
ModelHBL2311SW
TypeWatertight Devices
ColorBlack/White

Questions about this item

What cord diameter and wire gauge range does the HBL2311SW accept for termination?

The plug accommodates cord diameters from .36 in to .93 in and wire sizes from 16 AWG to 8 AWG, using screw terminals with a polarized and grounded configuration.

Will the L5-20P twist-lock design stay mated with an existing L5-20R receptacle that has seen heavy use?

Yes, the twist-lock mechanism is intended to maintain connection during operation and reduce accidental disconnection even when the mating receptacle is worn from prior service.

How can I verify the plug is performing correctly after wiring it?

Confirm the brass blades seat fully and lock with a quarter-turn, the clear polycarbonate retainer is engaged, and the assembly shows no gaps at the IP66-rated seal; the UL94 V-0 housing and stainless-steel screws should remain secure up to the 75 °C operating limit.

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