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Eaton / Cutler-Hammer QC1040 Miniature Circuit Breaker
- 40A
- 1 Pole
- Panel Mount
Eaton / Cutler-Hammer
QC1040
Miniature Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
QC1040
Quantity
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Eaton / Cutler-Hammer QC1040 - 40A 1 Pole Miniature Circuit Breaker
New
Quantity
Quantity
Eaton / Cutler-Hammer QC1040 - 40A 1 Pole Miniature Circuit Breaker
New
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | QC1040 |
| Series | QC |
| Amperage | 40A |
| Poles | 1 |
| Mounting Style | Panel Mount |
| Voltage | 120/240VAC, 24-48VDC, 62.5VDC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC, 5kA @ 24-48VDC, 3.8kA @ 62.5VDC |
| Frame Type | QC |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | Control Panels, Enclosures, DIN Rail (with adapter), Eaton Quicklag Panelboards |
| Wire Gauge | 14-4 AWG (Al/Cu) |
| Max Wire | 4 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, DIN Rail Adapter |
|---|---|
| Accessories | Line and Load Lugs Included |
| Standards | CSA C22.2 No. 5, HACR, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Non-Interchangeable Trip |
Sold out
Quantity
Eaton / Cutler-Hammer QC1040 - 40A 1 Pole Miniature Circuit Breaker
Re-Certified
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | QC1040-R |
| Series | QC |
| Amperage | 40A |
| Poles | 1 |
| Mounting Style | Panel Mount |
| Voltage | 120/240VAC, 24-48VDC, 62.5VDC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC, 5kA @ 24-48VDC, 3.8kA @ 62.5VDC |
| Frame Type | QC |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | Control Panels, Enclosures, DIN Rail (with adapter), Eaton Quicklag Panelboards |
| Wire Gauge | 14-4 AWG (Al/Cu) |
| Max Wire | 4 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, DIN Rail Adapter |
|---|---|
| Accessories | Line and Load Lugs Included |
| Standards | CSA C22.2 No. 5, HACR, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Non-Interchangeable Trip |
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Description
Part of the Quicklag series, this 40A single-pole breaker delivers reliable overcurrent protection for commercial and industrial 120/240V systems. The cable-in/cable-out design allows for secure integration into Eaton Quicklag panelboards and standard control enclosures. It also adapts to DIN rails. With a 10 kAIC interrupt rating, it provides dependable fault-handling capabilities. The breaker features fixed thermal-magnetic trip functions and is HACR rated.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | QC1040 |
| Series | QC |
| Amperage | 40A |
| Poles | 1 |
| Mounting Style | Panel Mount |
| Voltage | 120/240VAC, 24-48VDC, 62.5VDC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC, 5kA @ 24-48VDC, 3.8kA @ 62.5VDC |
| Frame Type | QC |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | Control Panels, Enclosures, DIN Rail (with adapter), Eaton Quicklag Panelboards |
| Wire Gauge | 14-4 AWG (Al/Cu) |
| Max Wire | 4 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, DIN Rail Adapter |
|---|---|
| Accessories | Line and Load Lugs Included |
| Standards | CSA C22.2 No. 5, HACR, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Non-Interchangeable Trip |
Product FAQs
6 answersCan the Eaton QC1040 be mounted on a standard 35mm DIN rail?
Yes, but it requires a separate DIN rail adapter kit, such as Eaton part number QCDINADAPT. Out of the box, the breaker is configured for standard panel mounting with feed-thru connections.
What does a feed-thru connection mean for this Quicklag breaker?
A feed-thru, or cable-in/cable-out connection, means the breaker does not plug into or bolt onto a panelboard busbar. It uses box lugs on both the line and load sides for direct wire connections, which is common in control panels and standalone enclosures.
Will the QC1040 fit in a standard residential load center?
No. The QC1040 is a feed-thru breaker designed for control panels, enclosures, and specific Eaton Quicklag panelboards. It will not fit in standard plug-on (Type BR or CH) or bolt-on (Type BAB) residential load centers.
Are Eaton and Cutler-Hammer QC1040 breakers interchangeable?
Yes. Eaton acquired Cutler-Hammer and continues to manufacture the Quicklag QC series. An Eaton QC1040 is an exact, direct replacement for an older Cutler-Hammer branded QC1040.
How does the thermal-magnetic trip unit operate on the QC1040?
The breaker uses a fixed LI (Long-Time, Instantaneous) trip function. The thermal component responds to sustained overloads by heating a bimetallic strip, while the magnetic component responds immediately to high-level short circuits.
Is there a face mounting plate available for the QC1040?
Yes. If your control panel or equipment installation requires a face-mounted accessory, you can use the Eaton QC1FP mounting plate, which is specifically designed for single-pole Quicklag breakers.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 15 reviews.
Total 5 star reviews: 15 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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Rating
15 reviews
- DSDenise S. A.Verified BuyerReviewingEaton / Cutler-Hammer QC3070H - 70A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/4/25Great turn around!
My experience was great. I had the item quickly; and it was more reasonably priced than other places I checked. Not having to pay freight was an absolute bonus.
- DMDouglas M.Verified BuyerReviewingEaton / Cutler-Hammer QC1020 - 20A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars7/28/25Just what I needed
Ordering was easy and the processing was immediate. The beakers I ordered was exact. I recommend this company for your needs.
- GLGianna L.ReviewingEaton / Cutler-Hammer QC1015 - 15A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars11/27/23Great
as advertised!
- EDElmer D.ReviewingZinsco QCAL100 - 100A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars10/28/23Very accurate, delivered on time
Very accurate, delivered on time and fixed my problem good job
- RBRawle B.ReviewingEaton / Cutler-Hammer QC1015 - 15A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/8/23SuperBreakers had the parts I
SuperBreakers had the parts I needed in stock, was shipped and delivered on time. Great service!