Eaton / Cutler-Hammer QC2050 Miniature Circuit Breaker
- 50A
- 2 Pole
- Panel Mount
Quantity
Eaton / Cutler-Hammer QC2050 - 50A 2 Pole Miniature Circuit Breaker
New
Quantity
Quantity
Eaton / Cutler-Hammer QC2050 - 50A 2 Pole Miniature Circuit Breaker
New
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | QC2050 |
| Series | QC |
| Amperage | 50A |
| Poles | 2 |
| Mounting Style | Panel Mount |
| Voltage | 120/240VAC, 48VDC, 62.5VDC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC, 5kA @ 48VDC, 3.8kA @ 62.5VDC |
| Frame Type | QC |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | Control Panels, Enclosures, DIN Rail (with adapter) |
| 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 Thermal, Fixed Magnetic |
| 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 |
Quantity
Eaton / Cutler-Hammer QC2050 - 50A 2 Pole Miniature Circuit Breaker
Re-Certified
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | QC2050-R |
| Series | QC |
| Amperage | 50A |
| Poles | 2 |
| Mounting Style | Panel Mount |
| Voltage | 120/240VAC, 48VDC, 62.5VDC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC, 5kA @ 48VDC, 3.8kA @ 62.5VDC |
| Frame Type | QC |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | Control Panels, Enclosures, DIN Rail (with adapter) |
| 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 Thermal, Fixed Magnetic |
| 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 |
Description
Built for commercial environments, the QC2050 provides 50A of reliable thermal-magnetic protection. This two-pole Quicklag breaker utilizes a cable-in/cable-out design, making it ideal for control panels and enclosures. This panel-mount unit accepts 14-4 AWG wire and serves as a drop-in replacement for the discontinued QCL2050, simplifying maintenance in existing systems. Delivering a 10 kAIC rating at 120/240VAC, it handles high fault currents and is HACR rated for HVAC applications.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | QC2050 |
| Series | QC |
| Amperage | 50A |
| Poles | 2 |
| Mounting Style | Panel Mount |
| Voltage | 120/240VAC, 48VDC, 62.5VDC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC, 5kA @ 48VDC, 3.8kA @ 62.5VDC |
| Frame Type | QC |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | Control Panels, Enclosures, DIN Rail (with adapter) |
| 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 Thermal, Fixed Magnetic |
| 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
8 answersCan I use the Eaton QC2050 to replace a discontinued Cutler-Hammer QCL2050?
Yes, the Eaton QC2050 serves as a drop-in replacement for the discontinued Cutler-Hammer QCL2050. It matches the physical dimensions, wire lug sizes, and electrical specifications of the legacy breaker.
Will the QC2050 plug into a standard residential load center?
No, Quicklag QC circuit breakers feature a cable-in/cable-out (feed-thru) design. They do not plug onto a busbar and are instead engineered for standalone panel-mount applications in control panels and specific industrial enclosures.
Can this feed-thru circuit breaker be mounted on a DIN rail?
Yes, the QC2050 can be DIN rail mounted inside an enclosure, but doing so requires a compatible Eaton Quicklag DIN rail adapter plate to properly secure the breaker to the rail.
Are Eaton and Cutler-Hammer QC2050 circuit breakers the exact same product?
Yes, Eaton acquired the Cutler-Hammer brand. A QC2050 circuit breaker labeled by Eaton is electrically and physically identical to one with the Cutler-Hammer branding and is fully interchangeable.
How does the QC2050 mounting differ from QCR2050 and QCF2050 circuit breakers?
The QC2050 uses a standard base-mount design for feed-thru wiring. The QCR2050 is designed specifically for rear mounting configurations, while the QCF2050 is built for front mounting applications.
Is the QC2050 circuit breaker rated for HVAC equipment?
Yes, this specific model is HACR rated. This certification means it has passed testing for safe use in protecting heating, air conditioning, and refrigeration equipment motor circuits.
Can the QC2050 be used in direct current (DC) control circuits?
Yes, in addition to its standard AC interrupting ratings, this breaker is approved for DC applications. It provides 5 kA of interrupting capacity at 48 VDC and 3.8 kA at 62.5 VDC.
What type of overcurrent protection does the LI trip function provide?
The LI designation indicates Long-Time and Instantaneous trip functions. The thermal long-time element safely disconnects gradual electrical overloads, while the magnetic instantaneous element immediately clears severe short circuits.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 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!