B-Line Eaton series Type 3/3R ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$667.39
B-Line Eaton series Type 3/3R junction boxes, 12" height, 10" length, 12" width, 3R, Screw cover, RTSC NK enclosure, Surface mounted, Small single do

B-Line Eaton series Type 3/3R junction boxes, 12" height, 10" length, 12" width, 3R, Screw cover, RTSC NK enclosure, Surface mounted, Small single do

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Model: 121210 RTSC NK
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$667.39
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Eaton B-Line series Type 3/3R junction boxes, 12" height, 10" length, 12" width, NEMA 3R, Screw cover, RTSC NK enclosure, Surface mounted, Small single door, No knockout, Embossed thru holes, Carbon steel

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
Mounting Method:
Surface
Nema Rating:
3R
Product Height:
12 in
Product Length Depth:
10 in
Product Weight:
13.3 lb
Product Width:
12 in
Special Features:
Rain hood, plated screws
Wall Thickness:
16 gauge
Department:
Electrical
Product Model:
RTSC NK enclosure
Product Color:
ANSI 61 Grey
Product Style:
Small single door
Product Material:
Carbon steel
Product Length:
10 in

B-LINE 121210 RTSC NK – Frequently Asked Questions

1) Can the B-Line 121210 RTSC NK junction box be mounted outdoors?
Yes. The Eaton B-Line 121210 RTSC NK enclosure carries a NEMA 3R rating, which covers outdoor use against falling rain, sleet and external ice formation. It ships with a rain hood over the cover and plated screws to handle the exposure. It is not a washdown or hosedown enclosure, so keep it off applications that need 4 or 4X.
2) What are the box dimensions on the B-Line 121210 RTSC NK enclosure?
12 inches high by 12 inches wide with a 10 inch depth, which is where the 121210 designation comes from. Plan the depth against your deepest device or wire bend radius before committing, since 10 inches is the fixed back-to-front dimension.
3) Does this B-Line junction box come with knockouts already punched?
No. The RTSC NK is a no-knockout enclosure, so every conduit entry is field drilled or punched where you want it. That is the reason to pick NK over a pre-punched box: you place the holes to suit the run instead of working around a factory pattern. Keep in mind any hole you make on the top or sides needs proper rain-tight fittings to preserve the 3R rating.
4) How does this enclosure attach to a wall, and does it need a separate mounting kit?
It is a surface mount box with embossed thru holes in the back, so it bolts straight to a wall, strut or backboard with your own fasteners. Nothing is included for mounting. At 13.3 pounds empty, lag into studs, block, or strut rather than hollow drywall alone.
5) Is the cover hinged or does it screw on?
Screw cover, flanged type. You back the plated screws out to get in, which is fine for a pull box or a termination point you rarely open, but it is slower than a hinged door for anything you service often. If crew access is frequent, look at a hinged-cover 3R enclosure in the same family instead.
6) What is the steel gauge and finish on this B-Line enclosure?
16 gauge carbon steel with a painted ANSI 61 grey finish, the standard grey that matches most switchgear and panel lineups. Carbon steel, not stainless, so it suits general outdoor and industrial locations but not corrosive or coastal chemical exposure.
7) Is this junction box UL listed for a spec job?
The enclosure is built to UL 50, the standard covering enclosures for electrical equipment, and it is made in the US. Between that and the NEMA 3R rating, it covers the usual submittal line items for an outdoor pull or junction box.
8) Can I use the 121210 RTSC NK as a panel enclosure with a back panel?
It is sold as a small single door screw-cover junction box, and no interior back panel is included. If you are mounting components, order a back panel sized for a 12 x 12 box separately. For straight splicing, pulling and terminating, the empty 10 inch deep body is what you want.
How fast can I get the B-LINE 121210 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 121210 RTSC NK come with a warranty?
Absolutely. The B-LINE 121210 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 121210 RTSC NK?
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 B-LINE 121210 RTSC NK from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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