B-Line Eaton series Type 3/3R ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$6,372.13
B-Line Eaton series Type 3/3R junction boxes, 30" height, 12" length, 30" width, 3 and 12, Screw cover, SCG enclosure, Surface mounted, Medium single

B-Line Eaton series Type 3/3R junction boxes, 30" height, 12" length, 30" width, 3 and 12, Screw cover, SCG enclosure, Surface mounted, Medium single

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Model: 303012 SCG
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$6,372.13
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Eaton B-Line series Type 3/3R junction boxes, 30" height, 12" length, 30" width, NEMA 3 and 12, Screw cover, SCG enclosure, Surface mounted, Medium single door, No mounting provisions, Galvanized steel, Oil-resistant gasket, gasketed screws

Manufacturer Resources

Product Specs

Certifications:
UL 50
Country Of Origin:
United States
Cover Type:
Screw
Finish Color:
Unfinished
Mounting Hole Details:
No mounting provisions
Mounting Method:
Surface
Nema Rating:
3
Product Height:
30 in
Product Length Depth:
12 in
Product Weight:
101.3 lb
Product Width:
30 in
Wall Thickness:
14 gauge
Department:
Electrical
Product Model:
SCG enclosure
Product Color:
Grey
Product Style:
Medium single door
Product Material:
Galvanized steel

B-LINE 303012 SCG – Frequently Asked Questions

1) Can the B-Line 303012 SCG enclosure be used outdoors?
Yes. The Eaton B-Line 303012 SCG is a Type 3/3R screw cover enclosure, rated NEMA 3 for outdoor use against windblown dust, rain, sleet and external ice formation, and also carries a Type 12 rating for indoor dust and dripping non-corrosive liquids. It uses an oil-resistant gasket and gasketed screws to hold that seal, and it is UL 50 listed.
2) What are the actual box dimensions of the B-Line 303012 SCG junction box?
It measures 30 inches high by 30 inches wide by 12 inches deep, so you get a full 30 x 30 back panel area with 12 inches of gutter depth for conduit bodies, terminal blocks or wire bending room. Weight is 101.3 lb, which is a two-person lift on the wall.
3) Does this B-Line enclosure come with mounting feet or brackets?
No. The 303012 SCG ships with no mounting provisions, so there are no welded feet, brackets or mounting holes on the back. It is a surface-mount enclosure, so plan on ordering mounting feet or a bracket kit separately and sizing your fasteners for a 101.3 lb box. Drilling the back of an enclosure you intend to keep rated is not an option on a Type 3/3R box.
4) Is a back panel included with the B-Line 303012 SCG screw cover enclosure?
The 303012 SCG is supplied as the enclosure body with its screw-on gasketed cover. Panels are a separate order on B-Line screw cover boxes, so if you are mounting breakers, terminal strips or a DIN rail you will want to add a matching 30 x 30 back panel and its mounting hardware to the job.
5) How heavy a gauge is the steel on this 30x30x12 B-Line junction box?
14 gauge galvanized steel throughout. That is the standard weight for a medium single door screw cover enclosure of this size and it is why the box runs 101.3 lb. It takes conduit hubs and wall penetrations without oil-canning, but bear the weight in mind when you pick anchors for block, drywall over stud, or strut.
6) Screw cover or hinged door enclosure, which should I spec for a pull box?
A screw cover like the 303012 SCG is the right call for a junction or pull box you open rarely: the cover comes off completely and the gasketed screws pull it down evenly onto the oil-resistant gasket, which is what keeps the Type 3/3R seal honest. If the box holds equipment you will access weekly, a hinged door version is easier to live with, because on a 30 x 30 cover you are backing out every screw each time and holding the panel while you do it.
7) Are there knockouts in this B-Line enclosure for conduit?
No, the 303012 SCG comes without knockouts. Field-drilling or punching your own openings is normal on a screw cover enclosure of this type, and it is what lets you place conduit exactly where the run lands. Use a rated hub or sealing washer on every penetration, because a plain locknut connection will not hold the Type 3/3R outdoor rating.
8) What part number do I order for the 30 x 30 x 12 B-Line Type 3R screw cover box?
Order Eaton B-Line model 303012 SCG. The number reads as the dimensions: 30 inch height, 30 inch width, 12 inch depth, with SCG meaning screw cover, galvanized. It is made in the US.
How fast can I get the B-LINE 303012 SCG 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 303012 SCG come with a warranty?
Absolutely. The B-LINE 303012 SCG 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 303012 SCG?
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 303012 SCG 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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