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Eaton / Cutler-Hammer CH240 Miniature Circuit Breaker
- 40A
- 2 Pole
- Plug-On
Eaton / Cutler-Hammer
CH240
Miniature Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
CH240
Quantity
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Eaton / Cutler-Hammer CH240 - 40A 2 Pole Miniature Circuit Breaker
New
Quantity
Quantity
Eaton / Cutler-Hammer CH240 - 40A 2 Pole Miniature Circuit Breaker
New
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | CH240 |
| Series | CH |
| Amperage | 40A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Terminal Type | Box Lugs |
|---|---|
| For Use With | Eaton CH Load Centers |
| Wire Gauge | 14-2 AWG |
| Max Wire | 2 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Padlock Attachment |
|---|---|
| Accessories | CH240-R |
| Standards | CSA C22.2, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 60C to 75C |
| Construction Features | Common Trip, HACR Rated |
Sold out
Quantity
Eaton / Cutler-Hammer CH240 - 40A 2 Pole Miniature Circuit Breaker
Re-Certified
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | CH240-R |
| Series | CH |
| Amperage | 40A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Terminal Type | Box Lugs |
|---|---|
| For Use With | Eaton CH Load Centers |
| Wire Gauge | 14-2 AWG |
| Max Wire | 2 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Padlock Attachment |
|---|---|
| Accessories | CH240-R |
| Standards | CSA C22.2, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 60C to 75C |
| Construction Features | Common Trip, HACR Rated |
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Description
Built for residential applications, the CH240 delivers 40 amps of thermal-magnetic protection. This two-pole component is manufactured to integrate with Eaton's 3/4-inch format enclosures. It mounts into Type CH load centers, utilizing a plug-on configuration for straightforward installation. While this model is standard, it is often substituted by the CHF240 version. Rated at 10kAIC for 120/240V systems, this HACR-rated unit is ideal for HVAC equipment and heavy-duty appliances.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | CH240 |
| Series | CH |
| Amperage | 40A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Terminal Type | Box Lugs |
|---|---|
| For Use With | Eaton CH Load Centers |
| Wire Gauge | 14-2 AWG |
| Max Wire | 2 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Padlock Attachment |
|---|---|
| Accessories | CH240-R |
| Standards | CSA C22.2, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 60C to 75C |
| Construction Features | Common Trip, HACR Rated |
Product FAQs
7 answersWhat load centers are compatible with the CH240?
The CH240 is designed exclusively for Eaton CH series load centers. Because it is a 2-pole breaker, it requires two 3/4-inch spaces (1.5 inches total) on the panel bus.
Can I install this CH240 breaker in a BR series panel?
No. Eaton CH breakers have a 3/4-inch width per pole, while BR breakers are 1-inch wide per pole. They have different mounting configurations and are not interchangeable.
Is the Eaton CH240 HACR rated?
Yes, this breaker is HACR rated, making it suitable for protecting circuits connected to heating, air conditioning, and refrigeration equipment.
Does the CH240 require a hold-down kit for back-fed applications?
Yes. If you are using this breaker as a back-fed main, the National Electrical Code (NEC) requires a hold-down retainer kit, such as the Eaton CH125RB, to securely anchor it to the load center.
Is the Cutler-Hammer CH240 the same as the Eaton CH240?
Yes. Eaton acquired Cutler-Hammer, and they continue to manufacture the CH series. The CH240 is the exact same component under both brand names.
What type of trip mechanism does the CH240 use?
It features a thermal-magnetic trip unit. The thermal element provides a time delay for mild overloads to prevent nuisance tripping, while the magnetic element reacts instantaneously to severe short circuits.
How do I know if the CH240 has tripped?
Standard Type CH circuit breakers, including the CH240, trip to the OFF position. Note that this standard model does not feature the visual trip flag found on the CHF240 variant.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 76 reviews.
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.
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Rating
76 reviews
- EKEdward K.Verified BuyerReviewingEaton / Cutler-Hammer CHFP120DF - 20A Dual Function Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars10/28/26Eaton residential dual function 20amp
I am hopeful this fairly new arc monitor circuit breaker idea is going to have a more longevity future. Founder Fred Kiko was an amazing man. Always room for safety inventions.
- ELEDUARDO L.Verified BuyerReviewingEaton / Cutler-Hammer CH120AF - 20A AFCI Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars10/23/26Breker replacement
Work perfectly.
- JGJason G.Verified BuyerReviewingEaton / Cutler-Hammer CH220GFI - 20A GFCI Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/24/26It was as advertised
It was delivered on time and works.
- LGlarry g.Verified BuyerReviewingEaton / Cutler-Hammer CH335 - 35A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars7/20/26good
Great part quick shipping
- PLPhid L.Verified BuyerReviewingEaton / Cutler-Hammer CH230GFI - 30A GFCI Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars7/7/26EFFICIENT
BREAKER ARRIVED QUICKLY. WELL PACKAGED FOR PROTECTION.