Eaton Main Circuit Breaker Loa...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$3,350.49
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Eaton Main Circuit Breaker Loadcenter, 400A, NEMA 1, 42-Circuit, Single-Phase

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Model: BR4242B400S

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

$3,350.49
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Eaton Main Circuit Breaker Loadcenter, 400A, NEMA 1, 42-Circuit, Single-Phase

The Eaton Main Circuit Breaker Loadcenter is a 400A, single-phase power distribution panel built for demanding residential and light commercial electrical systems. Configured with 42 circuits/spaces, a NEMA 1 enclosure rated for indoor surface mounting, and an included cover, this loadcenter delivers reliable, code-compliant power distribution backed by a UL Listed design (file E52977) and Eaton's 10-year limited warranty.

Key Features

  • Amperage Rating: 400A main circuit breaker rating supports high-capacity single-phase electrical service.
  • Circuit Capacity: 42 circuits and 42 spaces provide ample room for branch circuit expansion and future load additions.
  • NEMA 1 Enclosure: NEMA 1 rated enclosure designed for surface mounting in indoor, non-hazardous locations.
  • Durable Construction: Aluminum bus material offers reliable current-carrying performance within the loadcenter assembly.
  • Single-Phase Configuration: Engineered for single-phase power distribution in residential and light commercial applications.
  • Cover Included: Ships with a matching enclosure cover for a complete, ready-to-install assembly.
  • Interrupt Rating: 22 KAIC short-circuit interrupt rating supports safe operation under fault conditions.
  • Backed Warranty: Covered by Eaton's 10-year limited warranty for long-term peace of mind.

Certifications & Compliance

  • UL Listed, file E52977
  • NEMA 1 Rated Enclosure

Technical Specifications

  • Number of spaces: 42
  • Product Type: Load Center
  • Number of circuits: 42
  • Warranty: 10 year limited
  • Amperage Rating: 400 A
  • Phase: Single-phase
  • Mounting: Surface
  • Interrupt Rating: 22 KAIC
  • Bus Material: Aluminum
  • NEMA Rating: NEMA 1

Typical Applications

  • Residential Main Electrical Service Panels
  • Light Commercial Power Distribution
  • Single-Phase Branch Circuit Wiring
  • Panelboard and Load Center Upgrades
  • New Construction and Service Panel Renovation

Why Eaton?

Eaton loadcenters combine an aluminum bus, a NEMA 1 rated enclosure, and a 22 KAIC interrupt rating to deliver dependable, code-compliant power distribution for demanding electrical installations. Backed by UL Listing and a 10-year limited warranty, this 400A single-phase loadcenter is built for professionals who need reliable performance they can stand behind.

Manufacturer Resources

Product Specs

Product Width:
16 in
Cover:
Cover included
Amperage Rating:
400A
Product Length/Depth:
6.12 in
Number of spaces:
42
Product Height:
66.5 in
Product Type:
Load Center
Phase:
Single-phase
Number of circuits:
42
Warranty:
10 year limited
Mounting Method:
Surface
Interrupt rating:
22 KAIC
Bus material:
Aluminum
NEMA rating:
NEMA 1
Configuration:
NEMA 1 Enclosure
Certifications:
UL Listed file E52977
Department:
Electrical
Product Material:
Aluminum
Listing:
UL Listed
Product Group:
Load Centers & Panel Boards

Eaton BR4242B400S – Frequently Asked Questions

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