Thomas & Betts Galvanized Stee...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$174.47
$13.07
Thomas & Betts CWNV-25 Switch Boxes

Thomas & Betts Galvanized Steel Switch Box 14 Cu In with Non-Metallic Cable Clamp

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Model: CWNV-25
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$174.47
$13.07
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Thomas & Betts Galvanized Steel Switch Box 14 Cu In with Non-Metallic Cable Clamp

Professional electrical box solution for non-metallic sheathed cable installations

The Thomas & Betts galvanized steel switch box delivers reliable performance for electrical installations requiring non-metallic sheathed cable compatibility. This welded construction box features 14 cubic inches of volume with galvanized steel material and CV bracket system, providing durable protection and professional installation capability with UL certification.

Professional Features & Benefits

  • 14 Cu In Volume: Provides ample space for wire connections and device installation in standard switch applications
  • Galvanized Steel Construction: Delivers corrosion resistance and long-term durability in various installation environments
  • Welded Construction: Ensures structural integrity and reliable performance under electrical load conditions
  • Non-Metallic Cable Clamp (C-5): Securely accommodates non-metallic sheathed cable for code-compliant installations
  • Multiple Knockout Configuration: Features 2 bottom cable knockouts and 1/2" conduit knockouts on bottom and each side for versatile wiring options
  • UL Certification: Meets rigorous safety and performance standards for professional electrical installations
  • CV Bracket System: Provides secure mounting capability for reliable box positioning and support

Technical Specifications

  • Bracket: CV
  • Clamp: Non-Metallic (C-5)
  • Construction: Welded
  • Department: Electrical
  • Depth Inches: 2 3/4
  • Knockouts Bottom Cable: 2
  • Knockouts Bottom Conduit: (1) - 1/2"
  • Knockouts Each Side Conduit: (1) - 1/2"
  • Length Inches: 3
  • Material: Steel
  • Outer Package: 25
  • Package Height: 8.25
  • Package Length: 19
  • Package Width: 7.75
  • Product Finish: Galvanized
  • Product Group: Electrical Boxes
  • Product Subgroup: Electrical Boxes
  • Rohs Compliance: No
  • T B Sold In Uom: Each
  • T B Weight Per Uom: 75.19 lbs. per 100
  • Volume Cu In: 14
  • Width Inches: 2

Professional Applications

  • Residential Switch Installations
  • Commercial Building Electrical Systems
  • Multi-Unit Housing Projects
  • Professional Office Buildings
  • Retail and Light Commercial Facilities
  • Renovation and Retrofit Projects
  • New Construction Electrical Work

Why Choose Thomas & Betts Quality?

Thomas & Betts electrical boxes deliver proven reliability through welded steel construction, galvanized finish protection, and UL certification. The professional-grade materials and manufacturing ensure long-term performance in demanding electrical applications, backed by the trusted Thomas & Betts commitment to electrical safety and code compliance.

Manufacturer Resources

Product Specs

Bracket:
CV
Clamp:
Non-Metallic (C-5)
Construction:
Welded
Depth Inches:
2 3/4
Knockouts Bottom Cable:
2
Knockouts Bottom Conduit:
(1) - 1/2"
Knockouts Each Side Conduit:
(1) - 1/2"
Length Inches:
3
Outer Package:
25
Package Height:
8.25
Package Length:
19
Package Width:
7.75
Product Group:
Boxes & Enclosures
Rohs Compliance:
No
T B Sold In Uom:
Each
T B Weight Per Uom:
75.19 lbs. per 100
Volume Cu In:
14
Width Inches:
2
Department:
Electrical
Product Subgroup:
Electrical Boxes
Product Finish:
Galvanized
Product Material:
Steel
Product Type:
Switch Box

Thomas & Betts CWNV-25 – Frequently Asked Questions

1) How many wires can I put in a Thomas & Betts CWNV-25 switch box?
The CWNV-25 is a 14 cubic inch single gang steel switch box. Box fill under the NEC is calculated from that 14 cubic inch volume, with deductions for the device, the internal clamp, and the grounding conductors, so the usable conductor count depends on wire gauge and what else is in the box. If your fill calculation runs past 14 cubic inches you need a deeper box or a two gang.
2) Will this Thomas & Betts box take Romex, or do I need armored cable?
It is built for NM (Romex). The box comes with non-metallic cable clamps (C-5 type) already installed, and there are 2 bottom cable knockouts for the NM to enter through. If you are running MC or AC cable, a box with a metallic clamp or an appropriate connector into a conduit knockout is what you want instead.
3) What are the dimensions of the CWNV-25 switch box?
Three inches long by 2 inches wide by 2-3/4 inches deep. That is the standard single gang switch box footprint, so it takes a standard one gang device plate and drops into a normal stud bay layout.
4) Can I run conduit into this switch box instead of cable?
Yes. There is one 1/2 inch conduit knockout in the bottom and one 1/2 inch knockout on each side, so you can bring EMT or flex in from below or from either side. The cable knockouts in the bottom are separate from those and are meant for the non-metallic clamps.
5) What does the CV bracket on this switch box mean for mounting?
The CV bracket is a stud-mount bracket welded to the box, so it nails or screws to the face of a wood stud and sets the box at the right depth for drywall on new construction. If you are cutting into an existing finished wall, a bracketed box like this is the wrong choice; you want an old-work box with wing clamps.
6) What part number do I order for this Thomas & Betts single gang steel box?
Order it as Thomas & Betts CWNV-25. That designation covers the 14 cubic inch galvanized steel switch box with the CV bracket and the non-metallic C-5 clamps built in, so no separate clamp or bracket needs to be added to the order.
7) Is this box welded or riveted, and does that matter for grounding?
Welded construction, in galvanized steel. A welded steel box holds its squareness when you are torquing devices in and keeps continuous metal-to-metal contact through the enclosure, which matters when the box is part of the equipment grounding path.
8) Is the galvanized finish on this steel switch box OK for a damp or unfinished area?
The galvanized coating on the steel gives it corrosion resistance for general interior work, including unfinished basements, garages and utility spaces. It is not a weatherproof enclosure though, so anything wet-location or exterior calls for a gasketed cast or weatherproof box rather than this one.
9) How does the Thomas & Betts CWNV-25 come packaged, and how is it sold?
Sold each, packed 25 to an outer carton. Weight runs 75.19 lbs per 100 boxes, which is useful if you are estimating a bulk drop for a multi-unit rough-in.
How fast can I get the Thomas & Betts CWNV-25 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Thomas & Betts CWNV-25 come with a warranty?
Absolutely. The Thomas & Betts CWNV-25 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Thomas & Betts CWNV-25?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Thomas & Betts CWNV-25 from ZenSupply?
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