Leviton 16P21-UR Nema 3R Single Pole Protective Cap

Product Description

The LEVITON 16P21-UR is a male single-pole protective cap rated NEMA 3R for use with female plugs in electrical installations. Finished in red for quick visual identification, this cap shields the contact end of a female plug from moisture, dust, and incidental contact when the plug is not in service. The NEMA 3R rating indicates the enclosure is suitable for outdoor use where rain, sleet, and external ice formation are concerns. It carries both UL Listing and CSA Certification, meeting the compliance requirements commonly expected on commercial and industrial job sites. Electricians install this cap as a simple safeguard during temporary power setups, equipment storage, and deenergized circuit staging.

This protective cap is used wherever a female plug is left disconnected and exposed to weather or jobsite conditions. Typical applications include temporary power distribution on construction sites, outdoor electrical equipment connections, and generator cord management. The red color makes it easy to distinguish in multi-circuit setups or when color-coding conventions are in use on a project. The cap suits residential, commercial, and light industrial environments wherever outdoor-rated plug protection is required.

Key Features

• NEMA 3R rating provides protection against rain, sleet, and external ice formation
• Male configuration fits securely onto female plugs to seal the contact end
• Red color allows fast visual identification and supports color-coding practices
• UL Listed and CSA Certified for broad compliance acceptance
• Lightweight at 0.1 pounds, adding negligible load to cord and plug assemblies

Compatibility

Designed for use with female plugs requiring a NEMA 3R-rated single-pole protective cap.

Installation Notes

Installation is handled by a licensed electrician or qualified electrical worker. Always deenergize and lock out the circuit before handling plug and cap assemblies in accordance with NFPA 70E safe work practices. Seat the cap fully onto the female plug to ensure the contact end is completely covered. Inspect the cap for cracks or deformation before each use, as a damaged cap does not provide reliable protection.