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Zinsco Q15 Miniature Circuit Breaker
- 15A
- 1 Pole
- Plug-On
Zinsco
Q15
Miniature Circuit Breaker
Brand
Zinsco
SKU
Q15
Quantity
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Zinsco Q15 - 15A 1 Pole Miniature Circuit Breaker
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Description
Restoring power in older homes is straightforward with the Zinsco Q15, a 1-pole, 15-amp miniature circuit breaker. It provides essential thermal-magnetic protection for standard 120/240VAC residential branch circuits. Designed for an exact fit, this plug-on unit installs into legacy Zinsco load centers. For modern alternatives, it crosses over to the UBIZ15 replacement breaker. Delivering a 10kAIC rating, this breaker utilizes Magnetrip technology and features a blue color-coded handle.Specifications
| Brand | Zinsco |
|---|---|
| Part Number | Q15-R |
| Series | Q |
| Amperage | 15A |
| Poles | 1 |
| 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 |
| Wire Gauge | 14-8 AWG (Cu/Al) |
| Max Wire | 8 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Standards | UL 489, SWD, HACR Rated |
|---|---|
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Magnetrip, Color-Coded Handle (Blue) |
Product FAQs
6 answersWhat electrical panels are compatible with the Zinsco Q15 circuit breaker?
The Q15 is designed for use in legacy Zinsco load centers. It is also compatible with older GTE Sylvania panels that accept Zinsco-style plug-in breakers.
Is there a modern replacement for the obsolete Zinsco Q15?
Yes, the Connecticut Electric UBIZ15 is a newly manufactured replacement circuit breaker designed to directly cross-reference and replace the legacy Zinsco Q15.
Is the Q15 the same as a Zinsco Magnetrip breaker?
Yes, the Q15 is part of the original Zinsco Type Q series, which was commonly marketed under the Magnetrip name due to its thermal magnetic trip technology.
What size wire is required for installing the Q15 breaker?
The Q15 features lug terminals that accept 14 AWG to 8 AWG copper or aluminum wiring. Always verify wire sizing against local electrical codes for a 15-amp circuit.
Are Zinsco Q15 breakers safe to use in existing panels?
While exact replacement breakers like the Q15 can be used to maintain existing systems, many electricians recommend upgrading legacy Zinsco panels due to known historical reliability issues with the original busbar designs.
What types of circuits is the 15-amp Q15 breaker typically used for?
A 15-amp, 1-pole breaker like the Q15 is generally used to protect standard 120V residential branch circuits, including general lighting and standard wall receptacle circuits.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 47 reviews.
Reviews Summary
Generated by AI from 91 most recent customer reviews
Last updated 8/1/25
Customers say these circuit breakers arrive quickly and match their specifications perfectly. Many reviews mention success finding hard-to-locate specialty breakers through this supplier. Common feedback includes praise for the accurate product descriptions, reliable shipping, and competitive pricing. While some note occasional stock limitations, users consistently report the breakers fit and function as intended.
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Rating
47 reviews
- CGCrocefissa G.Verified BuyerReviewingSiemens Q115 - 15A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/18/26Quick delivery and great price.
The circuit breakers are at a great cost.
- JBJason B.Verified BuyerReviewingSiemens Q2150B - 150A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/18/26Great experience
The product was exactly what I needed and it arrived on time.
- DQDon Q.Verified BuyerReviewingSiemens Q3100 - 100A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/14/26Siemens breaker
Great customer experience, great prices and fast shipping... Definitely will be buying her again.
- CSChristopher S.Verified BuyerRated 5 out of 5 stars8/12/26Siemens 60
Perfect new condition
- GSGeorge S.Verified BuyerReviewingSiemens Q2150B - 150A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars3/4/26Great service
Every time I call or go online you have the parts I'm looking for.