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Eaton / Cutler-Hammer CH140 Miniature Circuit Breaker
- 40A
- 1 Pole
- Plug-On
Eaton / Cutler-Hammer
CH140
Miniature Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
CH140
Quantity
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Eaton / Cutler-Hammer CH140 - 40A 1 Pole Miniature Circuit Breaker
New
Quantity
Quantity
Eaton / Cutler-Hammer CH140 - 40A 1 Pole Miniature Circuit Breaker
New
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | CH140 |
| Series | CH |
| Amperage | 40A |
| Poles | 1 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | CH |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | Eaton CH Load Centers |
| Wire Gauge | 14-2 AWG (Cu/Al) |
| 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, Handle Lock |
|---|---|
| Standards | CSA C22.2 No. 5, UL 489, HACR |
| Approval | CSA, UL |
| Temp Rating | 60C to 75C |
| Construction Features | HACR Rated |
Sold out
Quantity
Eaton / Cutler-Hammer CH140 - 40A 1 Pole Miniature Circuit Breaker
Re-Certified
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | CH140-R |
| Series | CH |
| Amperage | 40A |
| Poles | 1 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | CH |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | Eaton CH Load Centers |
| Wire Gauge | 14-2 AWG (Cu/Al) |
| 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, Handle Lock |
|---|---|
| Standards | CSA C22.2 No. 5, UL 489, HACR |
| Approval | CSA, UL |
| Temp Rating | 60C to 75C |
| Construction Features | HACR Rated |
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Description
Providing essential thermal-magnetic protection, this 40-amp single-pole device is tailored for residential branch circuits. It ensures reliable power distribution and safeguards against overloads. Designed for 3/4-inch enclosures, it installs easily into Eaton and legacy Cutler-Hammer CH load centers. The plug-on mounting style ensures a secure connection. Rated for 10kAIC, the unit is HACR certified for HVAC systems. Consider the newer CHF140 for a visual trip indicator.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | CH140 |
| Series | CH |
| Amperage | 40A |
| Poles | 1 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | CH |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | Eaton CH Load Centers |
| Wire Gauge | 14-2 AWG (Cu/Al) |
| 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, Handle Lock |
|---|---|
| Standards | CSA C22.2 No. 5, UL 489, HACR |
| Approval | CSA, UL |
| Temp Rating | 60C to 75C |
| Construction Features | HACR Rated |
Product FAQs
7 answersWhat load centers are compatible with the CH140 breaker?
The CH140 is designed exclusively for Eaton and legacy Cutler-Hammer CH series load centers. It is a 3/4-inch wide breaker and is not interchangeable with Eaton BR series or other 1-inch breaker formats.
Is the CH140 HACR rated?
Yes, this breaker is HACR certified, making it suitable for use with heating, air conditioning, and refrigeration equipment.
Can the CH140 replace older Cutler-Hammer CH140 breakers?
Yes. Eaton acquired Cutler-Hammer, and the modern Eaton CH140 is the exact replacement for legacy Cutler-Hammer CH140 breakers.
What is the difference between the CH140 and the CHF140?
The CHF140 is a newer variant that features a visual trip flag indicator. Both models are 40A, 1-pole CH breakers and are fully interchangeable in the same panels.
How many panel spaces does the CH140 require?
As a 1-pole CH series breaker, it requires a single 3/4-inch space in the load center.
Does the CH140 provide GFCI or AFCI protection?
No. The CH140 is a standard thermal-magnetic breaker. It provides essential overload and short-circuit protection but does not include ground-fault or arc-fault circuitry.
How does the CH140 connect to the panel busbar?
It utilizes a plug-on mounting design that snaps directly onto the silver-flash-plated copper busbar standard in Eaton CH load centers.
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Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 74 reviews.
Total 5 star reviews: 72 Total 4 star reviews: 2 Total 3 star reviews: 0 Total 2 star reviews: 0 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.
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Rating
74 reviews
- 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.
- CSChristine S.Verified BuyerReviewingEaton / Cutler-Hammer CH2100-LONG - 100A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars5/18/26Got 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.
Very thankful for SuperBreakers!
- MKMichael K.Verified BuyerReviewingEaton / Cutler-Hammer CH330 - 30A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars4/22/26Happy Customer
Arrived as described and in the timeframe