Designed to support residential and commercial systems, this 100A three-pole breaker provides essential overcurrent protection. It features the legacy long-style body, making it suitable for older enclosures requiring this form factor. The breaker mounts into Eaton Type CH load centers via a simple plug-on connection. As the predecessor to the modern CH3100, users must confirm panel compatibility. With a 10kAIC rating at 240V, it includes a common trip function and carries an HACR rating.
What type of panel is required for the CH3100LONG?
This breaker is designed exclusively for Eaton or Cutler-Hammer Type CH load centers. It is not compatible with BR series or other manufacturer panels.
Can I install this 3-pole breaker in a standard residential single-phase panel?
No. The CH3100LONG is a 3-pole breaker that requires a 3-phase electrical system. Standard residential single-phase panels cannot accommodate 3-pole breakers.
How much panel space does the CH3100LONG require?
This 3-pole breaker requires three standard 3/4-inch spaces in a Type CH load center, taking up a total width of 2.25 inches.
What wire sizes do the box lugs on this breaker accept?
The terminals are designed to accept 10 AWG up to 1/0 AWG copper (Cu) or aluminum (Al) wire.
What does the LI trip function indicate on this breaker?
The LI designation stands for Long-Time and Instantaneous trip functions. This means the breaker uses a thermal-magnetic mechanism to protect against both gradual overloads (Long-Time) and sudden short circuits (Instantaneous).
Can the CH3100LONG be used on a 480V system?
No. This miniature circuit breaker has a maximum voltage rating of 240VAC and is not suitable for 277/480V applications.
Does this breaker include ground fault (GFCI) or arc fault (AFCI) protection?
No. The CH3100LONG is a standard thermal-magnetic circuit breaker. It does not provide GFCI or AFCI protection.
Are Eaton and Cutler-Hammer CH breakers the same?
Yes. Eaton acquired Cutler-Hammer, and the CH series breakers are the same product line. A modern Eaton CH breaker is a direct replacement for an older Cutler-Hammer CH breaker of the same specifications.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 74 reviews.
5.0
Rated 5.0 out of 5 stars
Based on 74 reviews
5
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72
Total 5 star reviews: 72
4
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2
Total 4 star reviews: 2
3
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0
Total 3 star reviews: 0
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Total 2 star reviews: 0
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Total 1 star reviews: 0
Reviews Summary
Generated by AI from 100 most recent customer reviews
Last updated 8/5/25
Customers say these electrical breakers are readily available when hard to find elsewhere. Many reviews mention fast shipping and accurate order fulfillment. Common feedback includes competitive pricing and proper packaging. Reviews note the products fit correctly and match specifications. While most highlight quick delivery times, some mention occasional supply delays. The ordering process receives praise for its simplicity.
BREAKER ARRIVED QUICKLY. WELL PACKAGED FOR PROTECTION.
CS
Christine S.
Verified Buyer
Reviewing
Eaton / Cutler-Hammer CH2100-LONG - 100A 2 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
5/18/26
Got a great refurbished breaker - saved a $6500 Service Replacement
When our main breaker frizzed out, the option we were presented with was replacing the entire panel and service due to the type and part - no longer produced for replacement parts. It would be a $6500 replacement.
We'll likely have to do it at some point but, for now, the replacement breaker we were able to source from Superbreakers (with a $25 warranty) was $5900 less expensive. installation ran a few hundred dollars and the tech said the part looked to be in excellent condition and was prepped for install as he would have hoped.