Eaton BR Series Main Breaker L...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$8,437.18
Eaton BR Series Main Breaker Loadcenter, 400A, 42-Circuit, Aluminum Bus

Eaton BR Series Main Breaker Loadcenter, 400A, 42-Circuit, Aluminum Bus

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Model: 3BR4242B400S

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

$8,437.18
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Eaton BR Series Main Breaker Loadcenter, 400A, 42-Circuit, Aluminum Bus

The Eaton BR Series Main Breaker Loadcenter is a three-phase main circuit breaker loadcenter rated 400 A, built with an aluminum bus and housed in a NEMA 1 surface-mount enclosure. Featuring the BWH main circuit breaker and 42 circuit spaces (42 circuits), this loadcenter is engineered for demanding power distribution in commercial and light industrial settings. It carries a 22 kAIC interrupt rating and is UL Listed (file E52977) for dependable, code-compliant performance.

Key Features

  • Amperage Rating: 400 A main circuit breaker for high-capacity power distribution.
  • Durable Construction: Aluminum bus material for reliable current-carrying performance.
  • Main Circuit Breaker: BWH main breaker provides centralized disconnect and overcurrent protection.
  • Configuration: 42 circuit spaces (42 circuits) to accommodate extensive branch-circuit wiring.
  • Three-Phase Design: Configured for three-phase electrical systems.
  • Interrupt Rating: 22 kAIC for robust fault-current handling.
  • Mounting & Enclosure: Surface-mount NEMA 1 enclosure suited for indoor installations.
  • Factory Options: Available with factory-integrated surge protection; no feed-thru lugs.

Certifications & Compliance

  • UL Listed, file E52977
  • NEMA 1 Enclosure Rating

Technical Specifications

  • Number of spaces: 42
  • Product Type: Load Center
  • Number of circuits: 42
  • Warranty: 10 year limited
  • Main circuit breaker: BWH

Typical Applications

  • Commercial and Light Industrial Electrical Installations
  • Main Power Distribution and Load Centers
  • Panelboard and Branch-Circuit Wiring
  • Three-Phase Electrical Systems
  • New Construction and Facility Upgrades

Why Eaton?

Eaton's BR Series loadcenters combine an aluminum bus, a 400 A BWH main circuit breaker, and a 22 kAIC interrupt rating in a UL Listed, NEMA 1 enclosure backed by a 10 year limited warranty. Built for three-phase power distribution, this loadcenter delivers the reliability and code-compliant performance professional electricians expect from Eaton.

Manufacturer Resources

Product Specs

Product Width:
19 in
Amperage Rating:
400A
Product Length/Depth:
58 in
Number of spaces:
42
Product Height:
7.5 in
Product Type:
Load Center
Phase:
Three-phase
Number of circuits:
42
Warranty:
10 year limited
Main circuit breaker:
BWH
Mounting Method:
Surface
Options:
Factory integrated surge, No feed thru lugs
Interrupt rating:
22 kAIC
Bus material:
Aluminum
NEMA rating:
NEMA 1
Configuration:
42-Circuit
Certifications:
UL Listed file E52977
Department:
Electrical
Product Material:
Aluminum
Standards:
NEMA 1
Listing:
UL Listed
Product Group:
Load Centers & Panel Boards

Eaton 3BR4242B400S – Frequently Asked Questions

How fast can I get the Eaton 3BR4242B400S 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 3BR4242B400S come with a warranty?
Absolutely. The Eaton 3BR4242B400S 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 3BR4242B400S?
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
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