Leviton 16P21-UB Nema 3R Male Single Pole Cap Blue

Product Description

The LEVITON 16P21-UB is a single pole protective cap designed to cover and protect a female plug when it is not in use. Rated NEMA 3R, this cap provides protection against falling dirt, rain, sleet, and snow, making it suitable for outdoor or wet-location applications. The blue color provides quick visual identification of the connector type on the job. It is a male-gender cap, meaning it mates with the receiving end of a female plug to seal the contact area. Electricians and maintenance personnel install this cap as a safety measure to guard against contamination, moisture, and accidental contact with energized connectors.

This protective cap is used in commercial, industrial, and residential electrical installations wherever a female plug or connector needs to be protected during downtime or storage. Typical applications include temporary power setups, job-site wiring, outdoor equipment hookups, and any environment where weatherproof connector protection is required. The NEMA 3R rating makes it appropriate for covered outdoor locations exposed to precipitation.

Key Features

• NEMA 3R rated for protection against falling dirt, rain, sleet, and snow
• Male gender configuration seats securely over female plug connectors
• Blue color allows fast visual identification of connector type
• CSA Certified and UL Listed for compliance with North American safety standards
• Single pole design for straightforward, dedicated connector protection

Compatibility

Designed for use with female plugs requiring single pole protective covering in NEMA 3R-rated environments.

Installation Notes

Installation is performed by a licensed electrician or qualified maintenance technician. Before applying or removing this cap, confirm the associated circuit is de-energized and locked out per applicable NFPA 70 (NEC) lockout/tagout procedures. The cap should be seated fully onto the female plug to ensure the weatherproof seal is maintained. Do not force the cap onto connectors of a different configuration or gender.