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Black nylon midget locking connector, straight orientation, screw terminals

Hubbell Incorporated

Hubbell Incorporated HBL4779VBK 15A 2P 3W Locking Connector

SKU CH-6H0Z-Q792P

A 15 A, 277 V AC locking connector with screw terminals for cables between .22 and .66 in diameter

  • Product typeLocking Devices
  • Product colorBlack
  • 15 A rating handles standard loads safely
  • IP20 protection shields contacts from solid objects
  • Nylon housing resists impact in tough environments
  • Screw terminals accept 0.22–0.66 in cables securely
  • 277 V AC rating suits commercial lighting circuits

15 A 277 V Locking Connector

The Hubbell HBL4779VBK is a midget locking connector rated for 15 amps at 277 volts AC. It accepts cables from .22 to .66 inches in diameter using screw terminals. The straight orientation suits panel or inline wiring where a secure twist-lock connection is required.

Single-Phase 2-Pole 3-Wire Limits

This device uses a NEMA L7-15R configuration with two poles and three wires on a single phase. The 15 A rating sets the maximum continuous current, while the 277 V rating defines the voltage ceiling. IP20 protection means it is guarded against solid objects only and not against water ingress.

Impact-Resistant Nylon Housing

The black nylon body is impact resistant and houses brass contacts for reliable conductivity. A hinged wiring style speeds termination, and the absence of a shroud or cap keeps the profile compact. Screw terminals clamp conductors directly without specialised tooling.

How it compares

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

Price $18.99
Cheaper than about 73% of the 3,838 comparable items (median $41.99).

Specifications

Product
Brand nameHubbell Wiring Device-Kellems
Model nameHBL4779VBK
Product typeLocking Devices
Product colorBlack

Questions about this item

Should I choose the 15 A 277 V L7-15R version or a different rating?

This connector is a single 15 A 277 V AC L7-15R midget locking type; no other current or voltage versions are listed for this model.

What does the 15 A 277 V rating mean when the connector is wired in a real circuit?

It will carry up to 15 A at 277 V AC single-phase through two poles and three wires with screw-terminal connections.

How does the NEMA L7-15R locking interface limit what I can plug into it?

The L7-15R configuration only accepts matching L7-15P locking plugs rated 15 A 277 V AC, preventing mismatched voltage or blade-type connections.

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