Eaton MBB444 Instant Service S...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$9,685.29
$9,635.29

Eaton MBB444 Instant Service Switchboard, Main Breaker, Switch Only, 400A main ampere rating, Three-phase, Four-wire, NEMA 1 (Indoor), 480Y/277V max. voltage

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Model: MBB444

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

$9,685.29
$9,635.29
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Instant Service Switchboard, Main Breaker, Switch Only, 400A main ampere rating, Three-phase, Four-wire, NEMA 1 (Indoor), 480Y/277V max. voltage

Manufacturer Resources

Product Specs

Amperage Rating:
400A
Catalog Notes:
480Y/277V distribution panels have double branch provisions for four Type FD 225A frame circuit breakers and 24 poles of Type GHB 100A frame circuit breakers
Certifications:
UL Listed
Compliances:
Meets UBC, CBC, and IBC requirements for all seismic zones
Enclosure:
NEMA 1
Number Of Wires:
4
Phase:
Three-phase
Product Height:
90 in
Product Length Depth:
14 in
Product Weight:
456 lb
Product Width:
32 in
Voltage Max:
480Y/277 V
Product Group:
Electrical
Department:
Electrical

Eaton MBB444 – Frequently Asked Questions

How fast can I get the Eaton MBB444 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 Eaton MBB444 come with a warranty?
Absolutely. The Eaton MBB444 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 Eaton MBB444?
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 Eaton MBB444 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.