Eaton BR vs CH: Complete Comparison Guide

Eaton manufactures two residential circuit breaker lines that are frequently confused — the BR series and the CH series. Both are Eaton products, both are residential-grade, and both carry UL listing. But they are NOT interchangeable. The BR (formerly Cutler-Hammer BR) fits in BR-type loadcenters, while the CH fits in CH-type loadcenters. The CH series is Eaton's premium line with a classified 22,000 AIC rating, while the BR is the standard 10,000 AIC residential line. This guide explains every difference.

Eaton BR vs Eaton CH Comparison

The Critical Difference: NOT Interchangeable

BR breakers will NOT fit in a CH panel, and CH breakers will NOT fit in a BR panel. The bus stab and mounting clip designs are completely different. Check your panel door label — if it says 'BR' in the model number, you need BR breakers. If it says 'CH', you need CH breakers. This is the single most important thing to know before ordering.

The AIC Rating Advantage of CH

The CH series has a classified 22,000 AIC (Ampere Interrupting Capacity) rating, compared to the BR's standard 10,000 AIC. This means CH breakers can safely interrupt fault currents up to 22,000 amps — important in homes located near utility transformers or in areas with high available fault current. If your utility has informed you that available fault current exceeds 10,000A at your panel, you need CH-type (or equivalent high-AIC) breakers.

When to Choose BR

Choose BR breakers when: you have an existing BR panel (most common scenario in eastern US), your available fault current is under 10,000A (typical for most residential installations), you need breakers above 150A (CH maxes out at 150A), or you're working on a budget project where the lower cost per breaker matters across many circuits.

When to Choose CH

Choose CH breakers when: you have an existing CH panel (common in western US), your available fault current exceeds 10,000A (near transformers, commercial areas), you want the extra safety margin of 22,000 AIC even in a standard residential installation, or your local inspector requires high-AIC breakers based on a fault current study.

Regional Distribution

BR panels dominate the eastern United States, while CH panels are more common in the western US. This is largely a historical artifact of Cutler-Hammer's distribution patterns before the Eaton acquisition. Both lines are available nationwide, but finding replacement breakers may be easier depending on your region.

Verdict

If you're replacing a breaker, match your panel type — there's no choice. For new installations, the CH offers better fault current protection (22kAIC vs 10kAIC) at a modest price premium. The BR is perfectly adequate for most residential applications where available fault current is under 10,000A. Both are quality Eaton products with full UL listing.

Frequently Asked Questions

Can I use an Eaton BR breaker in a CH panel?

No. BR and CH breakers have different bus stab designs and are NOT interchangeable. Always match the breaker type to your panel type as shown on the panel door label.

Is Eaton CH better than BR?

CH has a higher AIC rating (22,000A vs 10,000A), making it better for high fault current locations. BR is adequate for standard residential use. Both meet UL safety standards.

What does the 22,000 AIC rating on CH mean?

AIC (Ampere Interrupting Capacity) is the maximum fault current the breaker can safely interrupt. A 22,000 AIC breaker can handle fault currents up to 22,000 amps — important near utility transformers where fault currents can be high.

How do I know if I have a BR or CH panel?

Check the label on the inside of the panel door. BR panels have 'BR' in the model number (e.g., BR2040B200). CH panels have 'CH' in the model number (e.g., CH42BPN200K).