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Zinsco QC15 Molded Case Circuit Breaker
- 15A
- 2 Pole
- Plug-On
Zinsco
QC15
Molded Case Circuit Breaker
Brand
Zinsco
SKU
QC15
Quantity
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Zinsco QC15 - 15A 2 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Quantity
Zinsco QC15 - 15A 2 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Zinsco |
|---|---|
| Part Number | QC15 |
| Series | QC |
| Amperage | 15A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | QC |
|---|---|
| Terminal Type | Lugs |
| For Use With | Zinsco Load Centers, Sylvania Load Centers |
| Wire Gauge | 14-6 AWG |
| Max Wire | 6 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Standards | UL 489 |
|---|---|
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Common Trip |
Quantity
Zinsco QC15 - 15A 2 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Zinsco |
|---|---|
| Part Number | QC15-R |
| Series | QC |
| Amperage | 15A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | QC |
|---|---|
| Terminal Type | Lugs |
| For Use With | Zinsco Load Centers, Sylvania Load Centers |
| Wire Gauge | 14-6 AWG |
| Max Wire | 6 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Standards | UL 489 |
|---|---|
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Common Trip |
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Description
Manufactured for residential and commercial applications, this 15A two-pole breaker provides reliable thermal-magnetic trip functions. It mounts into legacy Zinsco and Sylvania load centers, serving as an exact fit for aging infrastructure. This unit replaces the UBIZ215 substitute model. Featuring a 10kAIC rating at 120/240VAC, it delivers essential long-time and instantaneous protection while maintaining HACR and SWD ratings for switching duty.Specifications
| Brand | Zinsco |
|---|---|
| Part Number | QC15-R |
| Series | QC |
| Amperage | 15A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | QC |
|---|---|
| Terminal Type | Lugs |
| For Use With | Zinsco Load Centers, Sylvania Load Centers |
| Wire Gauge | 14-6 AWG |
| Max Wire | 6 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Standards | UL 489 |
|---|---|
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Common Trip |
Product FAQs
7 answersWhich load centers accept the QC15 circuit breaker?
The QC15 is a plug-on breaker designed specifically for legacy Zinsco and Sylvania load centers that require Type QC frame breakers.
Are Zinsco and Sylvania QC breakers interchangeable?
Yes. Sylvania acquired Zinsco in the 1970s, so breakers branded as GTE Sylvania, Zinsco-Sylvania, or Zinsco Type QC share the same physical footprint and plug-on connection.
Is there a modern aftermarket replacement for the Zinsco QC15?
Yes, Connecticut Electric manufactures new, ETL-listed replacement breakers for the QC frame. The UBIZ215 is a direct modern cross-reference designed to fit the same legacy panels.
How can I visually identify a 15-amp Zinsco QC breaker in an existing panel?
Zinsco color-coded their breaker handles based on amperage. The 15-amp QC15 features a blue handle, making it easy to spot among other ratings in the load center.
What safety concerns should be addressed when replacing a Zinsco QC15?
Zinsco load centers have a documented history of aluminum bus bar oxidation. Before installing a replacement breaker, a licensed electrician must inspect the panel's bus bar for pitting, melting, or corrosion. Damaged bus bars can cause breakers to fuse to the contacts and fail to trip during an overload.
What wire sizes do the lugs on the QC15 accept?
The lug terminals accommodate wiring ranging from 14 AWG to 6 AWG. Ensure the connections are properly torqued during installation to prevent loose connections and arcing.
What does the LI trip function on the QC15 indicate?
The LI designation means this thermal-magnetic breaker includes Long-Time and Instantaneous trip functions. The thermal element protects against sustained overloads, while the magnetic element trips instantly during a short circuit.
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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!