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Yellow watertight straight-blade connector with press-on cap

Hubbell Incorporated

Hubbell Wiring Device-Kellems HBL15W33 Watertight Straight Blade Connector Yellow 20A 125V

SKU CH-21XS-KKM63

Watertight straight-blade connector rated 20 A at 125 V with screw terminals for cables from .3 to .66 in

  • TypeWatertight Elastogrip
  • ColorYellow
  • Watertight protection for wet or damp locations
  • 20 A current rating handles heavy-duty loads
  • 125 V AC voltage rating suits standard circuits
  • Screw-terminal wiring ensures secure cable connections
  • Accepts cable diameters from .3 to .66 in

Watertight Straight Blade Connector

The Hubbell HBL15W33 is a 20 A, 125 V AC connector rated for wet or damp locations. Its yellow thermoplastic elastomer housing and press-on cap seal against moisture while the screw terminals accept three wires from 0.3 to 0.66 in cable diameter. It suits contractors and facility managers who need a grounded NEMA 5-20R connection that stays reliable outdoors or in wash-down areas.

Sustained load behaviour

The device carries its full 20 A rating continuously without derating when installed within the specified cable range. Thermoplastic elastomer housing resists deformation and chemical attack during long shifts in humid or hosed-down environments. The screw-terminal grip remains secure through thermal cycling, and the watertight seal maintains integrity so leakage current stays negligible over extended duty cycles.

Pre-order checks

Verify that the supply circuit is single-phase 125 V AC protected by a 20 A breaker and wired with conductors sized for 20 A service. Confirm the cable outer diameter falls between 0.3 and 0.66 in so the gland compresses evenly. Ensure the mounting location allows straight orientation and that local code accepts a general-grade, 1 hp rated connector for the intended motor or heating load.

Highlights

  • Watertight protection for wet or damp locations
  • 20 A current rating handles heavy-duty loads
  • 125 V AC voltage rating suits standard circuits
  • Screw-terminal wiring ensures secure cable connections
  • Accepts cable diameters from .3 to .66 in

Specifications

BrandHubbell Wiring Device-Kellems
ModelHBL15W33
TypeWatertight Elastogrip
ColorYellow

Questions about this item

How much heat or noise does the HBL15W33 produce when it runs continuously at 20 A?

The connector is a passive wiring device with no moving parts or electronics, so it generates no audible noise and negligible heat when used within its 20 A, 125 V rating.

What cable and tools do I need to terminate the HBL15W33 properly?

You need a 3-wire cable with an outside diameter between 0.3 in and 0.66 in, plus a screwdriver for the screw terminals; the press-on cap is included.

Can I plug the HBL15W33 into an older 15 A NEMA 5-15R receptacle?

No, the connector has a 5-20R blade configuration with a horizontal neutral slot that physically prevents insertion into a 15 A 5-15R outlet.

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