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

Product Description

The LEVITON 16R23-UE is a male panel receptacle rated for 400 amps at 600 volts, built for heavy-duty power distribution 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 it is designed to resist rainfall and sleet, allowing installation in outdoor or semi-protected environments. The unit measures approximately 2.72 inches in length and is finished in black. It weighs 0.8 pounds. Electricians and industrial maintenance technicians install this component when a secure, weatherproof panel-mount power inlet is required.

This panel receptacle is used in commercial and industrial electrical systems where a reliable, high-ampacity inlet connection is needed at a panel or enclosure face. The NEMA 3R rating makes it appropriate for outdoor electrical enclosures, metering sections, and temporary power distribution panels exposed to weather. The threaded stud termination provides a solid mechanical and electrical connection at high current levels, which is critical in feeder-side applications. It is also used in generator transfer switch panels and portable power inlet boxes that require a robust, code-compliant connection point.

Key Features

• 400-amp, 600-volt rating for high-current power distribution
• NEMA 3R rated — suitable for outdoor and rain-exposed installations
• Male connector with threaded stud termination for a secure, vibration-resistant connection
• Accepts 2 AWG through 4/0 AWG wire for flexible conductor sizing
• CSA and UL Listed (UL 1691, File E151429; CSA LR 76878-4) for code-compliance assurance
• Compact 2.72-inch overall length fits standard panel knockout cutouts

Compatibility

Designed as an OEM-style panel receptacle for high-ampacity electrical enclosures, generator inlet panels, and power distribution equipment requiring a NEMA 3R rated, 400-amp, 600-volt male inlet connection.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and applicable local codes. De-energize and lock out the panel or enclosure completely before mounting or wiring this receptacle. Ensure conductor terminations at the threaded stud are properly torqued and secured with appropriate hardware to prevent loosening under load. The NEMA 3R rating requires that the enclosure or panel housing maintain its weatherproofing integrity after installation.