We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Hubbell HBL29W74 watertight locking connector L14-30R yellow thermoplastic housing

Hubbell Incorporated

Hubbell HBL29W74 Watertight Locking Connector L14-30R line protection

SKU CH-3JC8-T5753

A watertight locking connector rated 30A with L14-30R configuration, NEMA 4/4X/6/6P and IP69K sealing, accepting 0.375 in to 1.125 in cords and operating from -40°C to +60°C

  • Product typeWatertight Devices
  • Watertight protection for harsh environments with NEMA 4, 4X, 6, 6P and IP69K ratings
  • Reliable power delivery in extreme temperatures from -40°C to +60°C continuous operation
  • Corrosion-resistant nickel-plated brass contacts ensure long-lasting conductivity in wet conditions
  • Flexible cord accommodation accepts diameters from .375 in to 1.125 in for various cable types
  • Impact-resistant thermoplastic elastomer housing with stainless steel hardware withstands industrial abuse

Watertight L14-30R Connector

The Hubbell HBL29W74 is a 30 A locking connector built for industrial and commercial power distribution. Its watertight thermoplastic elastomer housing and nickel-plated brass contacts resist impact, corrosion and UV exposure. The device accepts cord diameters from .375 in to 1.125 in and suits wire sizes from 12/3 SJ through 8/3 S. It is intended for installers who need a grounded, straight-orientation receptacle rated NEMA 4, 4X, 6, 6P and IP69K.

Sustained Load Behaviour

Under continuous rated current the connector limits temperature rise to a maximum of 30 °C per UL 498. The operating range spans -40 °C to +60 °C, so performance remains stable in freezing plants or hot outdoor sites. Stainless steel hardware and UV-stabilised materials prevent degradation during long-term exposure. The design targets maintenance crews and OEMs who cannot tolerate contact failure after months of full-load service.

NEMA and IP Practical Limits

The L14-30R configuration provides a four-pole, three-wire grounding arrangement with screw terminals. Compliance with NEMA WD-1, WD-6 and ANSI standards ensures interchangeability with matching plugs and flanged inlets. The IP69K rating confirms protection against high-pressure, high-temperature wash-down, while NEMA 6P covers prolonged submersion. Buyers who need a higher amperage rating or a different NEMA pin layout must select another device.

How it compares

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

Price $136.99
Pricier than about 75% of the 1,135 comparable items (median $54.99).

Specifications

Product
Brand nameHUBBELL
Product typeWatertight Devices

Questions about this item

How much heat does the HBL29W74 generate when running at 30 A continuously?

Temperature rise is limited to a maximum of +30 °C per UL498 at rated current, so the connector body stays within 30 °C above ambient during full-load operation.

What cable size must I already have to terminate in this L14-30R connector?

The connector accepts cord diameters from 0.375 in to 1.125 in and is compatible with wire sizes 12/3 SJ through 8/3 S.

Will this watertight connector mate with my existing L14-30P plug on the generator cord?

Yes, the NEMA L14-30R receptacle configuration matches any standard L14-30P locking plug for a secure, grounded connection.

More in Breakers & Circuit Protection

Similar items