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Eaton CH Thermal Magnetic Circuit Breaker, Three-Pole, 240V
Model: EAT-CH-345
Eaton CH Thermal Magnetic Circuit Breaker, Three-Pole, 240VThe Eaton CH Thermal Magnetic Circuit Breaker is a Type CH 3/4-Inch standard circuit breaker engineered for use with Type CH Loadcenters...
Eaton
Starting at
$441.00
Eaton CH Series Circuit Breaker, 240V, 10 kAIC
The Eaton CH Series Circuit Breaker is a thermal magnetic CHB-type breaker rated 240 V, with a 10 kAIC interrupt rating, engineered for use with Eaton CH Loadcenters. Sized for conductors in the #8-2 AWG range, this circuit breaker delivers reliable overcurrent protection for demanding branch circuits in residential, commercial, and light industrial panels. Backed by UL 489 listing and Eaton's limited lifetime warranty, it's built to deliver dependable, code-compliant performance in CH Loadcenter installations.
Key Features
- Thermal Magnetic Trip: Thermal magnetic trip design for reliable overcurrent and short-circuit protection.
- Branch Circuit Protection: Engineered for dependable branch circuit and equipment feeds.
- Voltage Rating: Rated 240 V for standard commercial and residential distribution systems.
- Interrupt Rating: 10 kAIC interrupt capacity for safe fault-current handling.
- Wire Range: Accommodates #8-2 AWG conductors for flexible field wiring.
- Circuit Breaker Type: CHB-type breaker engineered specifically for compatibility with Eaton CH Loadcenters.
- Limited Lifetime Warranty: Backed by Eaton's limited lifetime warranty for long-term dependability.
Certifications & Compliance
- UL 489 Listed
Technical Specifications
- Used with: CH Loadcenters
- Voltage rating: 240 V - 240 V
- Type: Circuit breaker
- Warranty: Limited lifetime
- Interrupt rating: 10 kAIC
- Circuit breaker type: CHB
- Certifications: UL 489
Typical Applications
- Residential and Commercial Panelboard Wiring
- Branch Circuit Protection
- CH Loadcenter Upgrades and Replacements
- Equipment and Feeder Circuit Protection
- New Construction and Electrical Renovation Projects
Why Eaton?
Eaton's CH Series circuit breakers are engineered for dependable, code-compliant performance in CH Loadcenter systems, combining a robust thermal magnetic CHB design with a 10 kAIC interrupt rating and UL 489 listing for safe, reliable circuit protection. Backed by a limited lifetime warranty, this breaker is built for electricians and facility managers who need consistent, long-term performance from every panel component. Choose Eaton for dependable electrical distribution equipment engineered to meet demanding professional standards.
Variant Specifications
| Number of Poles | Amperage | SKU |
|---|---|---|
| Single-Pole | 15 amperes | CHB115 |
| Single-Pole | 20 amperes | CHB120 |
| Single-Pole | 30 amperes | CHB130 |
| Single-Pole | 40 amperes | CHB140 |
| Two-Pole | 100 amperes | CHB2100 |
| Two-Pole | 125 amperes | CHB2125 |
| Two-Pole | 40 amperes | CHB240 |
| Two-Pole | 50 amperes | CHB250 |
| Two-Pole | 70 amperes | CHB270 |
| Three-Pole | 100 amperes | CHB3100 |
| Three-Pole | 50 amperes | CHB350 |
| Three-Pole | 60 amperes | CHB360 |
| Single-Pole | 70 amperes | CHB370 |
Manufacturer Resources
Product Specs
- Used With:
- CH Loadcenters
- Department:
- Electrical
- Interrupt Rating:
- 10 kAIC
- Product Type:
- Circuit Breaker
- Certifications:
- UL 489
- Circuit Breaker Type:
- CHB
- Warranty:
- Limited lifetime
- Standards:
- UL 489
- Product Group:
- Circuit Protection
- Product Subgroup:
- Circuit Breakers
Eaton CHB115 – Frequently Asked Questions
1) Will an Eaton CHB breaker fit a Square D or Siemens panel?
No. The CHB is built for Eaton CH Loadcenters and its mounting is specific to that bus. If your panel is Square D QO/Homeline or Siemens, the CHB will not seat correctly and should not be forced in. Check the panel label for the CH designation before ordering.
2) What wire sizes can I land on an Eaton CHB circuit breaker?
The CHB lug accepts conductors in the #8 to #2 AWG range. That covers typical 40 to 125 amp feeder and equipment circuits. If you are landing #14 or #12 branch wiring, you are below that range and a smaller CH branch breaker is the right part.
3) Which Eaton CHB breaker do I order for a 240V two-pole circuit?
Two-pole CHB breakers come in 40 A (CHB240), 50 A (CHB250), 70 A (CHB270), 100 A (CHB2100), and 125 A (CHB2125). Pick the amperage to match the conductor and the equipment nameplate, then confirm the panel has two adjacent spaces free.
4) Is there a three-pole Eaton CHB breaker for a three-phase panel?
Three-pole CHB breakers are offered at 50 A (CHB350), 60 A (CHB360), and 100 A (CHB3100). They take three adjacent poles in a CH Loadcenter and carry the same 240 V, 10 kAIC rating as the single- and two-pole versions.
5) Does the CHB use thermal magnetic tripping or is it an electronic breaker?
Thermal magnetic. A bimetal element handles sustained overloads and a magnetic element handles short circuits. There is no electronic trip unit to set up, and no ground fault or arc fault sensing in this breaker, so if the circuit needs GFCI or AFCI protection you need a dedicated CH GFCI or AFCI breaker instead.
6) What single-pole amperages are available in the Eaton CHB line?
Single-pole CHB breakers are offered at 15 A (CHB115), 20 A (CHB120), 30 A (CHB130), 40 A (CHB140), and 70 A (CHB370). All are 240 V rated, so a single pole can be used on a 120 V branch circuit in a CH Loadcenter.
7) I manage several buildings with Eaton CH panels. Can I standardize on CHB breakers across all of them?
If the panels are Eaton CH Loadcenters, yes, the CHB is the matching breaker type and one part family covers 15 A single-pole through 125 A two-pole and 100 A three-pole. Stocking a few common ratings, typically 20 A single-pole and 50 A two-pole, covers most service calls. Panels of other makes in the same portfolio will need their own breaker type.
8) Can I use a CHB breaker as a main in a CH loadcenter?
The CHB is a branch circuit and feeder breaker, described for branch circuit protection and equipment feeds in CH Loadcenters. Larger ratings like the 100 A and 125 A two-pole are commonly used as feeder or subpanel supply breakers backfed or fed from the bus per the panel's instructions. Whether a given loadcenter permits a main breaker in that position is determined by the panel labeling, not the breaker.
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reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Eaton CHB115 come with a warranty?
Absolutely. The Eaton CHB115 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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