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Yellow watertight locking plug L14-30P straight body thermoplastic housing screw terminals

Hubbell Incorporated

Hubbell Incorporated HBL28W74 Watertight Locking Plug L14-30P 30 A 125/250V AC

SKU CH-ZTJP-SZCAT

Watertight industrial locking plug rated 30 A at 125/250 V AC with NEMA L14-30P configuration, chemical- and impact-resistant thermoplastic housing.

  • Product typeWatertight Devices
  • Main materialHAWA
  • Watertight seal protects connections in wet environments
  • 30 A, 125/250 V rating powers heavy-duty equipment
  • L14-30P locking design prevents accidental disconnection
  • Chemical- and impact-resistant housing withstands industrial abuse
  • Screw terminals accept cables from .375 to 1 in diameter

Watertight Locking Plug L14-30P

This industrial-grade plug provides a watertight, locking connection for 30 A circuits at 125/250V AC. It features a straight orientation with four blades and three poles in a single-phase configuration. The yellow thermoplastic elastomer housing resists chemicals and impact for demanding environments. Screw terminals accept cable diameters from 0.375 in to 1 in.

Suited for generator and temporary power setups

Electricians and facility managers running 30 A, 125/250V loads will appreciate the secure locking mechanism and watertight seal. The chemical-resistant housing withstands harsh job-site conditions. Buyers needing a different NEMA configuration, a higher amperage rating, or a non-locking straight blade should look at other devices.

Handles 30 A continuous duty

The plug comfortably carries 30 A on 125/250V AC single-phase circuits with its three-pole, four-blade design. It runs out of headroom when loads exceed the 30 A rating or require a different voltage or phase arrangement. The screw-terminal wiring style and 1 in maximum cable diameter set the practical installation limits.

How it compares

Measured against everything we stock in Breakers & Circuit Protection, at today’s prices. Recalculated every night.

Price $68.99
Pricier than about 59% of the 1,135 comparable items (median $54.99).

Specifications

Product
Brand nameHUBBELL
Product typeWatertight Devices
Size & build
Main materialHAWA

Questions about this item

What cable diameter range does the HBL28W74 plug accept for its screw-terminal connection?

The plug accepts cables from 0.375 in to 1 in outer diameter, secured by screw terminals inside the thermoplastic elastomer housing.

Will the L14-30P configuration on this 30 A plug mate with an existing L14-30R receptacle on my generator?

Yes, the NEMA L14-30P blades are keyed to lock into any standard L14-30R receptacle rated for 125/250 V AC single-phase service.

How can I verify the watertight seal is engaged after wiring the plug?

Tighten the gland nut until the thermoplastic elastomer housing compresses evenly around the cable jacket; the yellow housing should show no gaps and the locking ring should click into the receptacle detent.

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