B-Line Eaton series Type 3/3R ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$493.79
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B-Line Eaton series Type 3/3R junction boxes, 6" height, 4" length, 4" width, 3R, Hinged cover, RTHC enclosure, Surface mounted, Small single door, 2

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Model: 644 RTHC

In Stock (leaves warehouse same day if ordered before 3pm ET)

$493.79
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Eaton B-Line series Type 3/3R junction boxes, 6" height, 4" length, 4" width, NEMA 3R, Hinged cover, RTHC enclosure, Surface mounted, Small single door, 2 knockouts, Embossed thru holes, Carbon steel

Manufacturer Resources

Product Specs

Certifications:
UL 50
Closure Type:
Formed top hinge
Country Of Origin:
United States
Cover Type:
Hinged
Finish Color:
Painted
Locking Provisions:
Padlock provision
Mounting Hole Details:
Embossed thru holes
Mounting Method:
Surface
Nema Rating:
3R
Product Height:
6 in
Product Length Depth:
4 in
Product Weight:
2.2 lb
Product Width:
4 in
Special Features:
Rain hood, removable cover
Wall Thickness:
16 gauge
Department:
Electrical
Product Model:
RTHC enclosure
Product Color:
ANSI 61 Grey
Product Style:
Small single door
Product Material:
Carbon steel

B-LINE 644 RTHC – Frequently Asked Questions

1) Can the Eaton B-Line 644 RTHC junction box be mounted outdoors?
Yes. The 644 RTHC carries a NEMA 3R rating, which covers outdoor use against falling rain, sleet and ice formation. It also has a rain hood over the door. It is not a washdown or dust-tight box, so for hosedown or heavy dust go to a Type 4 or 4X enclosure instead.
2) How does the 644 RTHC enclosure mount, and does it need mounting feet?
Surface mount, straight to the wall or strut through embossed thru holes in the back of the box. The embossing keeps the fastener heads off the mounting surface so the back stays sealed. No external mounting feet are supplied with it.
3) Does the B-Line 644 RTHC junction box come with knockouts already, or do I have to punch my own?
It ships with 2 knockouts, so for a simple conduit in and out you are not drilling anything. Any additional entries you punch yourself, and on a 3R box those should be made on the bottom or lower sides and sealed with a raintight fitting so the rating holds.
4) What size is the B-Line 644 RTHC enclosure and how much does it weigh?
It measures 6 inches high, 4 inches wide and 4 inches deep, and weighs 2.2 pounds. That is a small single door box, sized for a disconnect splice, a contactor, or a few terminal blocks rather than a panel.
5) Can the cover on the 644 RTHC be locked?
Yes, there is a padlock provision on the door, so you can secure it with your own padlock. The cover is hinged on a formed top hinge and is removable, which helps when you need the box wide open to land conductors and then want the door back on.
6) Is the 644 RTHC steel or plastic, and will it hold up outdoors?
Carbon steel, 16 gauge, painted ANSI 61 grey. That is the standard grey you see on most industrial gear, so it matches adjacent enclosures on a wall. Steel does mean you need to keep the paint intact at field-drilled holes; in salt air or chemical exposure a stainless or non-metallic 4X enclosure is the better call.
How fast can I get the B-LINE 644 RTHC 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 644 RTHC come with a warranty?
Absolutely. The B-LINE 644 RTHC 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 644 RTHC?
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 644 RTHC 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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