Zinsco QFP2150K Molded Case Circuit Breaker
- 150A
- 2 Pole
- Plug-On
Quantity
Zinsco QFP2150K - 150A 2 Pole Molded Case Circuit Breaker
New
Quantity
Description
Supplying 150 amps of main service capacity, this 2-pole circuit breaker is engineered for residential and commercial applications. It protects electrical systems from damaging overloads and short circuits. Designed for seamless integration into legacy Zinsco load centers, this plug-on unit requires no modifications for installation. It is a reliable replacement for obsolete hardware and is cross-referenced with the UBITBFP1502. It features offset lugs and a 10kAIC rating at 120/240VAC.Specifications
| Brand | Zinsco |
|---|---|
| Series | QFP |
| Amperage | 150A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Zinsco Load Centers |
| Wire Gauge | 1 AWG - 300 kcmil |
| Max Wire | 300 kcmil |
| Min Wire | 1 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Accessories | Load Side Lugs Included |
|---|---|
| Standards | UL 489 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Main Breaker |
Product FAQs
5 answersWhat panels are compatible with the Zinsco QFP2150K circuit breaker?
The QFP2150K is designed for use as a main breaker in legacy Zinsco, Sylvania, and Challenger load centers that accept QFP-frame plug-in breakers.
Is there a modern replacement available for the Zinsco QFP2150K?
Yes. Connecticut Electric manufactures a UL-listed aftermarket replacement for this breaker. The direct replacement catalog number is UBITBFP1502, which is designed to fit the same Zinsco and Sylvania load centers.
How does the QFP2150K mount into the load center?
This breaker features a plug-in connection type. It pushes directly onto the busbars in compatible Zinsco and Sylvania panels without the need for bolting hardware.
What wire sizes can be used with the lugs on the QFP2150K?
The terminals on this 150A main breaker are rated to accept aluminum or copper conductors ranging from 1 AWG up to 300 kcmil.
Are Zinsco QFP main breakers safe to continue using?
Zinsco panels and breakers are obsolete and have a known history of busbar connection issues. Many electricians recommend inspecting the panel for signs of arcing or overheating. It is often suggested to replace the entire load center or use modern UL-listed replacement breakers.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 3 reviews.
- KYKathleen Y.Verified BuyerReviewingMilbank UQFP-100 2 Pole Circuit BreakerI recommend this productRated 5 out of 5 stars1/1/26Milbank 100 2 Pole Circuit Breaker
Product arrived on time, well packaged and exactly what we needed.
Jake was extremely helpful and courteous. You don’t find that too often these days. Will spread the word and recommend your company to all that require your service.
Thank you and Happy New Year
Sincerely,
K. Young
- QAquinlan a.Verified BuyerReviewingZinsco QFP2200T - 200A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/26/25Great communication and customer service
Ordered QFP2200T breaker and paid to ship overnight. Reached out to company when breaker did not arrive on time. Although I did not get the breaker when expected, they did communicate the situation, refunded my shipping and expedited the breaker to me once it was ready for shipping. They handled the situation in the best possible way given the circumstances.
Would buy from them again.
-Quinlan (Q-Extra Electrical Services)
- ARAized R.ReviewingZinsco QFP2200T - 200A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars10/7/21Excellent service!
I needed an obsolete part. They had it and sent it. Turned out it was the wrong part. Their customer service made up for it. They sent the correct part overnight and also sent a free ups label to return the wrong part. Great service! Highly recommend. And the refurbished part looked like it was in great shape.