Zinsco QFP3200 Molded Case Circuit Breaker
- 200A
- 3 Pole
- Plug-On
Quantity
Zinsco QFP3200 - 200A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Designed to handle heavy electrical loads, this 200-amp main disconnect delivers essential thermal-magnetic trip functions. It keeps legacy commercial facilities operational while maintaining original equipment standards. This plug-on unit installs seamlessly into vintage Zinsco panelboards, eliminating the need for aftermarket modification plates. It acts as a reliable cross-reference for the UBIZ3200. Factory-installed lugs accommodate 1 AWG to 300 kcmil conductors.Specifications
| Brand | Zinsco |
|---|---|
| Part Number | QFP3200 |
| Series | QFP |
| Amperage | 200A |
| Poles | 3 |
| Mounting Style | Plug-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Zinsco Panelboards |
| 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
7 answersWhich panelboards are compatible with the QFP3200 circuit breaker?
This breaker is designed specifically for legacy Zinsco commercial panelboards that accept QFP-frame plug-on main breakers. It is not interchangeable with other brands or modern panel types.
Can the QFP3200 be used in a standard residential Zinsco load center?
Typically, no. This is a 3-pole breaker designed for 3-phase commercial systems. Most residential Zinsco load centers are single-phase and require 2-pole main breakers.
What wire gauge range is supported by the terminal lugs on the QFP3200?
The mechanical lugs accommodate conductors ranging from 1 AWG to 300 kcmil. Ensure proper torque specifications are applied during installation to prevent thermal issues.
Does the QFP3200 require bolt-on hardware for installation?
No, this is a plug-on molded case circuit breaker. It presses directly onto the bus bars of compatible Zinsco panelboards without the need for mounting screws or bolts.
What is the aftermarket cross-reference for the Zinsco QFP3200?
The Connecticut Electric UBIZ3200 serves as a direct aftermarket replacement for this obsolete Zinsco breaker.
What safety considerations apply when servicing Zinsco panelboards?
Legacy Zinsco electrical panels have a documented history of bus bar degradation and breakers failing to trip under overcurrent conditions. Electricians should thoroughly inspect the panel busing for pitting or burn marks before installing a replacement breaker.
How does the trip mechanism function on the QFP3200?
It features a fixed thermal-magnetic trip unit with Long-Time and Instantaneous (LI) functions. The thermal element responds to sustained overloads, while the magnetic element trips immediately during a short circuit.
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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.