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Black nylon locking connector with straight screw terminals, 15A 125V L5-15R configuration

Hubbell Incorporated

Hubbell HBL4729CBK L5-15R Locking Connector 15A 125V Black

SKU CH-P5KT-YD08H

Locking connector rated 15 A at 125 V with screw terminals and IP20 protection

  • Product typeConnector
  • Overall length3
  • Product colorBlack
  • Product weight0.18
  • 15 A 125 V straight locking connector rated for industrial power
  • Nylon housing with IP20 rating resists chemicals and impacts
  • Brass screw-terminal contacts accept up to 0.72 in cable
  • Compact 3.000 in body weighs only 0.18 lb
  • NEMA L5-15R configuration ensures secure twist-lock mating

Industrial Locking Connector

The Hubbell HBL4729CBK is a straight L5-15R locking connector rated for 15 A at 125 V AC. It is built for installers and maintenance teams who need a secure single-phase connection in commercial or light-industrial environments. The twist-lock design prevents accidental disconnection on equipment that vibrates or moves during operation.

Thermals Noise and Power Draw

The nylon housing provides chemical and impact resistance while meeting IP20 protection for indoor use. Brass screw terminals accept up to three wires and a maximum cable diameter of 0.72 in. No active cooling or power circuitry is present, so the device adds no audible noise or measurable heat to the circuit.

Deciding Specification

The NEMA L5-15R configuration is the single detail that determines compatibility; it mates only with a matching L5-15P plug. Buyers who need a different blade pattern, a higher amperage rating, or a weather-rated enclosure cannot use this connector.

How it compares

Measured against everything we stock in AV Accessories & Components, at today’s prices. Recalculated every night.

Price $28.99
Cheaper than about 61% of the 3,838 comparable items (median $41.99).

Specifications

Product
Brand nameHubbell Wiring Device-Kellems
Model nameHBL4729CBK
Product typeConnector
Product colorBlack

Questions about this item

How do I install the Hubbell HBL4729CBK locking connector and what step is often missed?

Strip each of the three wires, insert them into the screw terminals matching the L5-15R wiring diagram, tighten the screws to the specified torque, then engage the twist-lock collar until it clicks — many installers forget to fully rotate the collar, leaving the connection loose.

What maintenance or replacement will the Hubbell HBL4729CBK need over time?

Inspect the brass contacts and nylon housing periodically for discoloration, cracking, or corrosion; if the screw terminals become loose or the housing shows impact damage, replace the connector — the chemical-resistant nylon and IP20 rating limit exposure, but heavy use still degrades terminals.

What limit appears first when the Hubbell HBL4729CBK runs at 15 A continuously?

The screw-terminal temperature rise becomes the limiting factor; the nylon housing is rated IP20 and the brass contacts carry 15 A at 125 V, so sustained full-load current heats the terminations before the cable or locking mechanism reaches its limit.

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