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Zinsco UBIZ270 Miniature Circuit Breaker
- 70A
- 2 Pole
- Plug-On
Zinsco
UBIZ270
Miniature Circuit Breaker
Brand
Zinsco
SKU
UBIZ270
Quantity
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Zinsco UBIZ270 - 70A 2 Pole Miniature Circuit Breaker
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Quantity
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Description
Designed specifically for residential power distribution, this 70-amp two-pole breaker mounts into legacy Zinsco Type QC load centers. The thermal-magnetic trip mechanism delivers consistent overload and short-circuit defense for heavier household loads. Electricians can use this unit to replace hard-to-find QC70 or QCAL70 breakers. The plug-on design ensures a secure connection to the busbar. Rated for 10kAIC at 120/240VAC, this HACR-certified component supports modern HVAC installations.Specifications
| Brand | Zinsco |
|---|---|
| Series | UBIZ Thick |
| Amperage | 70A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Terminal Type | Box Lugs |
|---|---|
| For Use With | Zinsco Load Centers (Type QC) |
| Wire Gauge | 14-2 AWG |
| Max Wire | 2 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Standards | HACR, UL 489 |
|---|---|
| Approval | ETL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Common Trip |
Product FAQs
5 answersWhat load centers are compatible with the UBIZ270 circuit breaker?
This breaker is designed specifically for legacy Zinsco and Sylvania-Zinsco load centers that accept Type QC plug-on breakers. It will not fit in modern standardized panels.
Which original Zinsco part numbers does this breaker replace?
The UBIZ270 serves as a direct aftermarket replacement for obsolete Zinsco QC70 and QCAL70 two-pole circuit breakers.
Is the UBIZ270 considered a thick or thin series breaker?
This is a thick series breaker. The two-pole unit measures 1.5 inches in total width, requiring two standard 3/4-inch spaces on the panel busbar.
Can I use this thick series breaker to replace a thin series Zinsco breaker?
No. The UBIZ270 requires two full 3/4-inch spaces. It cannot be used to replace a thin series Type RC breaker, which packs two poles into a single 3/4-inch space.
Are aftermarket UBIZ replacement breakers safety certified?
Yes, these newly manufactured replacement breakers are ETL Listed and tested to UL Standard 489 for molded case circuit breakers, ensuring they meet modern safety requirements.
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