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Black and white industrial locking plug with twist-lock body and cord grip

Hubbell Incorporated

Hubbell Incorporated HBL2421 Locking Plug L15-20P 20A 250V AC

SKU CH-ZMVK-V1TCQ

Locking plug rated 20 A at 250 V AC with L15-20P configuration, screw terminals, and cord grip for cable diameters 0.350 in to 1.150 in

  • Product typeLocking Devices
  • Product colorBlack/White
  • Secure lock prevents accidental disconnection
  • 20 A 250 V AC rating suits industrial power needs
  • Cord grip reduces strain on wire terminations
  • Wide cable range 0.350 in to 1.150 in
  • Certified to UL 498 CSA C22.2 No.42 W-C-596

Industrial Locking Plug L15-20P

The Hubbell HBL2421 is a NEMA L15-20P locking plug rated for 20 A at 250 V AC. It provides a secure three-pole, four-wire connection for industrial equipment requiring a twist-lock interface. The nylon housing and brass blades resist chemicals and impact. This plug suits installers who need a durable, certified termination for high-current circuits.

Cord Grip Range and Terminal Limits

The device accepts cable diameters from .350 in to 1.150 in, covering 16 AWG to 8 AWG stranded copper conductors. Screw terminals use a standard wiring style for reliable termination. The cord grip reduces strain on connections, but the fixed entry range excludes cables outside the stated diameter limits. Installers must verify conductor size before assembly.

Operating Temperature and Certification Scope

Continuous operation is rated from -40 °C to +75 °C without impact. The plug meets CSA C22.2 No. 42, UL 498 and Federal Specification W-C-596, with IP20 suitability and UL94 HB flammability rating. It is not rated for higher ingress protection or temperatures beyond the certified range. Buyers needing wet-location or extreme-temperature ratings must select a different device.

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 nameHBL2421
Product typeLocking Devices
Product colorBlack/White

Questions about this item

Should I pick the L15-20P or a different NEMA locking plug?

Choose L15-20P when you need a three-pole, four-wire 250 V AC connection rated for 20 A; other NEMA codes have different pole counts or voltage ratings.

What does the 20 A 250 V AC rating mean once the plug is installed?

It means the plug can continuously carry up to 20 amps at 250 volts AC in industrial equipment without overheating, provided wiring and circuit protection match.

What cable sizes does the L15-20P cord grip accept?

The cord grip accepts diameters from .350 in to 1.150 in, covering stranded copper from 16 AWG up to 8 AWG.

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