ABB - Installation Products CKMU - Single Gang While-In-Use Universal Medium Horitzonal Cover, 3-1/4 Inch Internal Depth, Silver, Aluminum Alloy, For use with Duplex, GFI, Single Receptacle, and Switch
ABB - Installation Products

CKMU

UPC: 042269004658


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Overview

ABB CKMU Single Gang While-In-Use Universal Medium Horizontal Cover (SKU: CKMU) is an electrical installation component designed for professional applications requiring safe, compliant access to electrical devices. Manufactured by ABB Installation Products, it is constructed from high-strength aluminum alloy for corrosion resistance and long-term reliability in indoor and outdoor environments. The CKMU supports duplex receptacles, GFCI outlets, single receptacles, and switches, making it suitable for residential, commercial, and industrial installations. It features a 3-1/4" internal depth for standard device clearance and a medium horizontal design compatible with most single gang device boxes. The while-in-use functionality allows access to outlets and switches without removing the cover, improving convenience, reducing maintenance downtime, and enhancing safety by minimizing exposure to live components. The silver finish resists tarnishing for a consistent appearance. The aluminum alloy meets industry durability and performance standards. The CKMU is ideal for commercial buildings, industrial facilities, data centers, healthcare environments, and residential projects, offering a cost-effective solution with durability, functionality, and compliance.
  • Universal compatibility with duplex receptacles, GFCI outlets, single receptacles, and switches
  • 3-1/4" internal depth for standard device clearance and professional aesthetics
  • While-in-use functionality allows access without cover removal, enhancing safety and convenience
  • Durable aluminum alloy construction with silver finish for corrosion resistance and longevity
  • Suitable for residential, commercial, and industrial applications

Specifications

Application
Residential-Holiday and landscape lighting, wells and sump pumps, sprinkler systems, plug-in timers, garages and patios
Color
Silver
Finish
Powder-coated
Knockouts
0
Material
Aluminum Alloy
Size
3-1/4 Inch Internal Depth
Special Features
Die-cast metal construction provides long-lasting durability
Standard
UL E28688
Standard
UL E28688 / UL E28688
Type
While-In-Use-Weatherproof Covers
Package Dimensions (L x W x H)
0.01 IN x 0.01 IN x 0.01 IN
Package Dimensions (L x W x H)
0.0254 cm x 0.0254 cm x 0.0254 cm
Package Weight (Imperial)
0.820 L
Package Weight (Metric)
0.372 kg
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Frequently Asked Questions

What configurations do the covers accommodate?

The covers accommodate GFCI, single, duplex, and switch configurations.

Are the covers weatherproof?

Yes, the covers are extra-duty metal weatherproof while-in-use covers.

How can I contact customer service for technical questions?

For technical questions, call 1-888-862-3289.

What is the internal depth of the CKMU cover?

The CKMU horizontal cover has an internal depth of 3¼ inches.

What safety compliance do these covers meet?

The covers comply with NEC Section 406.9 (B) (1) for wet locations and OSHA lockout/tagout requirements.

How many adapter plates are included with the covers?

Single-gang covers include two adapter plates, while two-gang covers include four adapter plates.

What installation features do the covers have?

The covers feature key-hole mounts for fast installation and a combination box or device-mounting design for flexibility.

What is the packaging quantity for CKMU?

The CKMU horizontal cover is packaged in quantities of 3.

What materials are used in the cover construction?

The covers are made of durable materials designed to prevent accidental disconnects and reduce tampering.

What is the purpose of the padlock eye?

The padlock eye is designed for a ¼ inch shackle to secure the cover and prevent unauthorized access.

How to Install the Code Keeper Wet Location Cover

This guide provides step-by-step instructions for installing the Code Keeper Wet Location Cover securely and safely.

Estimated time: 30m

Tools needed:

Screwdriver, Needle nose pliers

Supplies needed:

Mounting screws, Gasket, Adapter plates

  1. Turn off power

    Ensure safety by turning off the power to the electrical box where the cover will be installed.

  2. Prepare the gasket

    Knock out the appropriate receptacle pattern from the gasket based on your installation needs.

  3. Mount the cover plate

    Position the cover plate with the door hinges at the top. Secure it to the box using either the receptacle screws or the provided mounting screws, ensuring the gasket is properly seated.

  4. Seal the installation

    Apply caulk or sealant around the plate if installed on an irregular surface to prevent water ingress.

  5. Turn on power

    Once the installation is complete, restore power to the electrical box.

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