B-Line Eaton series Type 1 jun...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$154.51
$123.83
B-Line Eaton series Type 1 junction boxes, 6" height, 3" length, 6" width, 1, Screw cover, SC NK enclosure, Surface mounted, Small single door, No kn

B-Line Eaton series Type 1 junction boxes, 6" height, 3" length, 6" width, 1, Screw cover, SC NK enclosure, Surface mounted, Small single door, No kn

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Model: 663 SC NK
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$154.51
$123.83
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Eaton B-Line series Type 1 junction boxes, 6" height, 3" length, 6" width, NEMA 1, Screw cover, SC NK enclosure, Surface mounted, Small single door, No knockout, Thru holes, Carbon steel

Manufacturer Resources

Product Specs

Certifications:
UL 50
Country Of Origin:
United States
Cover Type:
Screw
Finish Color:
Painted
Mounting Hole Details:
Thru holes
Mounting Method:
Surface
Nema Rating:
1
Product Height:
6 in
Product Length Depth:
3 in
Product Weight:
2.7 lb
Product Width:
6 in
Special Features:
Keyhole slots on cover, plated screws
Wall Thickness:
16 gauge
Department:
Electrical
Product Model:
SC NK enclosure
Product Color:
ANSI 61 Grey
Product Style:
Small single door
Product Material:
Carbon steel

B-LINE 663 SC NK – Frequently Asked Questions

1) Can the B-Line 663 SC NK junction box be used outdoors or in a washdown area?
No. The 663 SC NK is a NEMA Type 1 enclosure, which is indoor-only protection against incidental contact and falling dirt. It has no gasket and no rating against water, dust, oil, or corrosive washdown. For a wet location or an exterior wall you need a Type 3R or Type 4 enclosure instead.
2) What size is the B-Line 663 junction box inside, and how deep is it?
It is a 6 x 6 inch box with a 3 inch depth: 6 inches height, 6 inches width, 3 inch length/depth. That 3 inch depth is the number to check first if you are stacking wire nuts or a terminal strip behind the cover.
3) Does the B-Line 663 SC NK come with knockouts for conduit?
It does not. The NK in the model designation means no knockouts, so the box ships blank and you punch or drill your own conduit openings where you need them. That is why electricians pick the NK version when the conduit entries do not line up with a standard knockout pattern. If you would rather not punch holes in the field, order a knockout version instead.
4) How does this B-Line screw cover box mount to a wall?
Surface mount, using thru holes in the back of the box. Run your fasteners through those holes into the wall, stud, or strut. At 2.7 lb empty it is light enough for most anchors, but pick the fastener for the substrate you are hitting.
5) Is the cover on the 663 SC NK hinged or a removable screw cover?
Screw cover, not hinged. It lifts fully off once the plated screws are backed out, and keyhole slots on the cover let you loosen rather than fully remove the screws to take it off, which helps when you are working overhead on a ladder. For a box you open daily, a hinged door style is the better choice.
6) Is this Eaton B-Line junction box UL listed, and is it made in the USA?
It is built to UL 50, the standard for enclosures for electrical equipment, and country of origin is the US. Useful if you are specifying for a job with domestic-sourcing or listed-enclosure requirements.
7) What part number do I order for the 6x6x3 B-Line screw cover box with no knockouts?
Order Eaton B-Line 663 SC NK. The number reads off the dimensions: 6 high, 6 wide, 3 deep, SC for screw cover, NK for no knockouts.
8) What gauge steel is the B-Line 663 junction box, and what is the finish?
16 gauge carbon steel, painted ANSI 61 grey. That is the standard grey used across most industrial control enclosures, so it matches existing panels and gutters in a typical plant or mechanical room, and it takes field touch-up paint without trouble.
How fast can I get the B-LINE 663 SC 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 663 SC NK come with a warranty?
Absolutely. The B-LINE 663 SC 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 663 SC 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 663 SC 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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