Leviton 16R23-UW Panel Receptacle 400A 600V Nema 3R

Product Description

The LEVITON 16R23-UW is a male panel receptacle rated for 400 amps and 600 volts, designed for heavy-duty electrical power connections in commercial and industrial applications. It features a threaded stud termination method and accepts wire sizes from 2 AWG up to 4/0 AWG, making it suitable for high-current feeder and service entrance connections. The NEMA 3R enclosure rating means this receptacle is built to withstand rain and sleet exposure, qualifying it for outdoor or semi-protected installations. Electricians and electrical contractors install this receptacle as a panel-mount power inlet where a secure, weatherproof disconnect or power transfer connection is required. The unit is finished in white and measures 2.72 inches in length.

This panel receptacle is used in residential, commercial, and light industrial settings where a robust, weather-resistant power connection point is needed at a panel or enclosure. Common applications include generator transfer connection points, temporary power installations, and service entrance panels where a 400-amp male receptacle must be panel-mounted. Its NEMA 3R rating makes it appropriate for outdoor enclosures, raintight boxes, and covered service entrances. The threaded stud termination provides a secure, vibration-resistant connection suitable for high-current conductors up to 4/0 AWG.

Key Features

• 400-amp continuous current rating supports heavy-duty feeder and service applications
• 600-volt rating compatible with standard single- and three-phase power systems
• NEMA 3R rated for outdoor use — resists rain, sleet, and external ice formation
• Threaded stud termination provides a mechanically secure, high-current connection
• Accepts 2 AWG through 4/0 AWG conductors for flexible wiring configurations
• UL Listed (File E151429) and CSA certified to standards 1691 and LR 76878-4

Compatibility

Designed as an OEM-style panel receptacle for use in NEMA 3R-rated enclosures and panels requiring a 400-amp, 600-volt male threaded stud connection point.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC). De-energize and lock out the panel or enclosure before beginning installation. Ensure conductor terminations at the threaded stud are properly torqued using calibrated tools per the conductor manufacturer's guidelines. Verify the mounting enclosure carries a NEMA 3R or higher rating to maintain the weatherproof integrity of the installation.