Hubbell Wiring Device-kellems HBL2421SW Locking Plug L15-20P

Product Description

The HUBBELL WIRING DEVICE-KELLEMS HBL2421SW is an industrial-grade locking plug rated for 20 amps at 250 volts in a NEMA L15-20P configuration. Built from thermoplastic elastomer, this 3-pole, 4-wire plug features a self-grounding design and a water-tight, IP66-rated housing. It accepts cord diameters from 0.35 inches up to 1.15 inches, covering a wide range of heavy-duty supply cords. Licensed electricians and industrial maintenance technicians install this plug in demanding environments where secure, vibration-resistant connections are required and where ingress protection against dust and water jets is essential.

This plug is suited for three-phase industrial power applications in manufacturing facilities, job sites, and commercial installations where an L15-20P locking connection is specified. Its IP66 rating makes it appropriate for wet or washdown locations. The self-grounding feature simplifies termination and helps ensure a reliable ground path without additional hardware. It carries CSA, UL, and UL Federal Specification listings and meets NEMA 4, 4X, and 12 enclosure standards, making it compliant with common industrial electrical codes.

Key Features

• NEMA L15-20P locking configuration — 3-pole, 4-wire, 250V, 20A
• IP66-rated water-tight housing suitable for wet and washdown locations
• Thermoplastic elastomer body for flexibility and impact resistance
• Self-grounding design for simplified and reliable ground termination
• Accepts cord diameters from 0.35 inches to 1.15 inches
• CSA Certified, UL Listed, and meets NEMA 4/4X/12 standards

Compatibility

Designed as an OEM-style industrial locking plug for use with L15-20R locking receptacles and inlets in three-phase, 250-volt, 20-amp applications.

Installation Notes

Installation should be performed by a qualified, licensed electrician in accordance with the National Electrical Code (NEC) and all applicable local codes. De-energize and lock out the circuit before terminating conductors to the plug. Verify that the supply cord diameter falls within the rated range of 0.35 inches to 1.15 inches before securing the cord grip. Do not exceed the 20A or 250V ratings of this device.