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Eaton B-Line series Type 3/3R junction boxes
Manufacturer Resources
Product Specs
- Certifications:
- UL 50
- Closure Type:
- Flanged cover
- Country Of Origin:
- United States
- Cover Type:
- Screw
- Finish Color:
- Painted
- Mounting Hole Details:
- Embossed thru holes
- Nema Rating:
- 3R
- Product Height:
- 18 IN
- Product Length Depth:
- 6 IN
- Product Weight:
- 18.4 LB
- Product Width:
- 18 IN
- Special Features:
- Rain hood, plated screws
- Wall Thickness:
- 16 gauge
- Department:
- Electrical
- Product Model:
- RTSC NK enclosure
- Product Color:
- ANSI 61 gray
- Mounting Method:
- Surface
- Product Style:
- Medium single door
- Product Material:
- Carbon steel
B-LINE 18186 RTSC NK – Frequently Asked Questions
1) Can the B-Line 18186 RTSC NK junction box be mounted outdoors?
Yes. The Eaton B-Line 18186 RTSC NK carries a NEMA Type 3R rating and includes a rain hood over the cover, so it is built for outdoor wall mounting where falling rain, sleet and ice are the concern. It is not rated for washdown or submersion duty. The enclosure is UL 50 listed.
2) What are the box dimensions on the B-Line 18186 RTSC NK enclosure?
It is an 18 x 18 x 6 inch box: 18 inches high, 18 inches wide, and 6 inches deep. That depth is what usually decides the job, since it sets how much room you have for conduit bodies, terminal blocks and wire bending space behind the flanged cover.
3) Does the 18186 RTSC NK come with knockouts, or do I have to punch my own conduit openings?
No knockouts. The NK in the part number means no knockouts, so every conduit entry is field-punched where you want it. That is the usual choice for a pull or junction box where the conduit runs are not fixed until the raceway is laid out. If you need factory openings, you want a knockout version instead.
4) How is this B-Line enclosure fastened to the wall?
Surface mount, using embossed through holes in the back of the box. The embossed holes stand the mounting point off the back panel so water tracking down the wall does not wick into the box interior. No separate mounting feet or brackets are part of the enclosure.
5) What gauge steel is the 18186 RTSC NK, and will the finish hold up outside?
The body is 16 gauge carbon steel with a painted finish in ANSI 61 gray, which is the standard gray used across industrial control gear so it blends with panels and disconnects already on the wall. Carbon steel painted, not stainless, so for coastal or chemically aggressive sites a stainless enclosure is the better call.
6) Is a NEMA 3R box like this acceptable for an outdoor junction box on a commercial site, or do I need a 4?
Type 3R covers outdoor use against rain, sleet and ice formation, which is what most exterior wall-mounted junction and pull boxes need. Step up to a Type 4 only where the enclosure will see directed hose spray or heavy windblown dust. The 18186 RTSC NK is 3R rated with a rain hood and UL 50 listed.
How fast can I get the B-LINE 18186 RTSC NK 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 B-LINE 18186 RTSC NK come with a warranty?
Absolutely. The B-LINE 18186 RTSC NK 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 B-LINE 18186 RTSC NK?
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