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Black nylon locking plug with brass blades, L14-30P configuration

Hubbell Incorporated

Hubbell HBL2711 Locking Plug L14-30P 30A 125/250V

SKU CH-0SGJ-KPMN3

A 30 A, 125/250 V AC locking plug with NEMA L14-30P configuration, screw terminals and a cord grip for 0.350–1.150 inch cords

  • Color MappingBlack/White
  • TypeLocking Devices
  • Secure locking connection with L14-30P NEMA configuration
  • Handles 30 A at 125/250V AC for demanding circuits
  • Screw terminals with funnel entry speed up termination
  • Cord grip accepts 0.350–1.150 in. diameter cords
  • Nylon housing rated –40 °C to 75 °C

Industrial Locking Plug L14-30P

The Hubbell HBL2711 is a NEMA L14-30P locking plug rated for 30 A at 125/250 V AC. It uses a three-pole, four-wire configuration with screw terminals that accept stranded copper wire from 16 AWG to 8 AWG. The nylon housing and brass blades are built for industrial environments where secure, polarized connections are required. Cord diameters from 0.350 to 1.150 inches are accommodated by the integral grip.

Thermals and Power Handling

The device is rated for continuous operation up to 75 °C and remains functional down to -40 °C without impact. Brass blades and the nylon body are constructed from materials rated for resistance to certain chemicals and impacts. The screw terminals feature funnel-shaped entries to ease termination and help maintain low-resistance connections under normal load. No active cooling or moving parts are present, so acoustic noise is not a factor.

Sustained Load Behaviour

Under continuous 30 A duty the plug operates within its 75 °C maximum temperature rating. The cord grip design reduces strain on terminations to help prevent loosening over time, while the included dust shield limits contaminant entry into the wiring chamber. Certification to CSA C22.2 No. 42 and UL Listing confirm compliance with North American safety standards for locking devices. It is not suited for applications requiring higher amperage or different NEMA configurations.

Highlights

  • Secure locking connection with L14-30P NEMA configuration
  • Handles 30 A at 125/250V AC for demanding circuits
  • Screw terminals with funnel entry speed up termination
  • Cord grip accepts 0.350–1.150 in. diameter cords
  • Nylon housing rated –40 °C to 75 °C

Specifications

BrandHubbell Electrical Products
Color MappingBlack/White
TypeLocking Devices

Questions about this item

How do I install the Hubbell HBL2711 L14-30P plug, and which step do people get wrong?

Strip each conductor to the funnel-entry depth, seat wires fully into the screw terminals, and tighten to the specified torque; the step most often missed is torquing the cord-grip screws evenly so the 0.350–1.150 in. jacket is clamped without crushing the conductors.

What maintenance or replacement will the HBL2711 locking plug need later?

Inspect the brass blades and nylon housing for heat discoloration, cracking, or contamination; re-torque the four screw terminals and the cord-grip screws annually, and replace the plug if the blades show pitting or the dust shield is torn.

What limit appears first on the HBL2711 under sustained 30 A load?

The 75 °C maximum continuous operating temperature of the nylon housing and terminal assembly is the first limit reached during prolonged 30 A use at 125/250 V AC.

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