Hubbell HBL2330SR2 L7-20R Locking Receptacle 20A 277V

Product Description

The HUBBELL WIRING DEVICE-KELLEMS HBL2330SR2 is a self-grounding locking receptacle rated for 20 amps at 277 volts AC. It follows the NEMA L7-20R configuration, featuring a 2-pole, 3-wire female contact arrangement. The self-grounding design eliminates the need for a separate grounding jumper wire by making ground contact directly through the mounting strap to a grounded metal box. Licensed electricians install this receptacle in commercial and industrial panel-fed circuits where twist-lock retention and 277V single-phase power are required. The gray color finish is standard for commercial wiring devices in this voltage class.

This receptacle is suited for commercial lighting circuits, industrial equipment feeds, and other applications operating on 277 volt AC single-phase power. The L7-20R NEMA locking configuration ensures positive retention of mating L7-20P plugs, making it appropriate for environments where vibration or accidental disconnection is a concern. Typical installations include warehouses, factories, and commercial facilities using 277V fluorescent or LED lighting systems fed from a 480Y/277V distribution panel.

Key Features

• NEMA L7-20R twist-lock configuration for secure plug retention
• Self-grounding design makes ground contact through mounting strap to metal box
• 20 amp, 277 volt AC rating for commercial and industrial single-phase circuits
• 2-pole, 3-wire female contact arrangement
• Gray finish standard for commercial wiring device applications
• Single-unit packaging with a minimum order quantity of 1

Compatibility

Designed as an OEM-style locking receptacle compatible with NEMA L7-20P locking plugs in 20 amp, 277 volt AC single-phase wiring systems. Self-grounding installation requires a grounded metallic outlet box.

Installation Notes

Installation must be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and applicable local codes. De-energize the circuit at the breaker and verify absence of voltage with a meter before beginning work. Self-grounding function is only effective when the receptacle is mounted to a properly grounded metallic outlet box; verify box grounding continuity before relying on the strap ground. Do not install in wet or damp locations unless the enclosure is rated for that environment.