Zinsco QFBL2200 Molded Case Circuit Breaker
- 200A
- 2 Pole
- Unit Mount
Quantity
Zinsco QFBL2200 - 200A 2 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Built to service older electrical systems, this 200A Zinsco main breaker provides critical overcurrent protection for residential and commercial panels. It ensures continued operation of legacy infrastructure without requiring a complete panel upgrade. The breaker installs into standard Zinsco panelboards and cross-references to the UBITBFP2002 substitute. Rated for 10kAIC at 120/240VAC, it utilizes proven thermal-magnetic trip mechanisms to defend against overloads and short circuits.Specifications
| Brand | Zinsco |
|---|---|
| Series | QFBL |
| Amperage | 200A |
| Poles | 2 |
| Mounting Style | Unit Mount |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | QFBL |
|---|---|
| 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 |
| Available Options | Hold-Down Kit |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | UL 489 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Main Breaker |
Product FAQs
4 answersWhat panelboards are compatible with the QFBL2200?
This main breaker is designed for legacy Zinsco panelboards and compatible Sylvania load centers that accept QFBL-frame unit-mount breakers.
Is there a modern replacement for the Zinsco QFBL2200?
Yes, the Connecticut Electric UBITBFP2002 is a modern, UL-listed cross-reference for legacy 200A Zinsco main breakers. Verify your specific panel mounting requirements before substituting, as the QFBL2200 utilizes a unit-mount, feed-thru design.
How is the QFBL2200 installed in the panel?
This is a unit-mount, feed-thru circuit breaker. It mounts directly to the panel structure and uses feed-thru lug connections on both the line and load sides rather than plugging directly onto a bus bar.
What should be inspected when replacing a Zinsco main breaker?
Legacy Zinsco panels have documented reliability issues. Before installing a replacement main breaker, a licensed electrician must inspect the panel bus bars and connection points for signs of arcing, pitting, or heat damage.
SuperClub
Join free. Get 500 SuperPoints.
Earn points on eligible purchases and redeem them at checkout.
100 SuperPoints = $1 off.
Warranties
Add an extra year of protection
60-Day Warranty
Your purchase includes 60 days of SuperBreakers warranty coverage.
Add a 1-year warranty extension in your cart.
Get a Quote
Don’t see what you’re looking for?
We source obsolete and hard-to-find parts every day.
Shipping
Free Shipping Policy
Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
Same Day Shipping
We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.
Expedited Shipments
Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.
International Shipping
All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.