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Zinsco UBIZ290 Miniature Circuit Breaker
- 90A
- 2 Pole
- Plug-On
Zinsco
UBIZ290
Miniature Circuit Breaker
Brand
Zinsco
SKU
UBIZ290
Quantity
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Zinsco UBIZ290 - 90A 2 Pole Miniature Circuit Breaker
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Description
Manufactured to safely restore power in older residential applications, the UBIZ290 is a 90A, two-pole miniature circuit breaker. It provides reliable thermal-magnetic protection for 120/240VAC circuits. This thick series plug-on breaker is an exact replacement for original Zinsco QC90 and QCAL90 models. It installs seamlessly into legacy Zinsco Type QC load centers without requiring any adapters. Fully HACR rated and UL 489 listed, it features a 10kAIC interrupting capacity.Specifications
| Brand | Zinsco |
|---|---|
| Series | UBIZ |
| Amperage | 90A |
| 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, Thick Series |
Product FAQs
7 answersWhich electrical panels are compatible with the UBIZ290 circuit breaker?
The UBIZ290 is an aftermarket replacement manufactured by Connecticut Electric. It is designed specifically to fit legacy Zinsco and Sylvania load centers that accept Type QC plug-on circuit breakers.
Which original Zinsco part numbers does the UBIZ290 replace?
This breaker serves as an exact, direct replacement for the obsolete Zinsco QC90 and QCAL90 90-amp, two-pole circuit breakers.
Is the UBIZ290 a thick or thin series breaker?
The UBIZ290 is a thick series breaker. It occupies a standard 1.5-inch wide footprint in the panel, matching the original QCAL90 dimensions.
Does the UBIZ290 require an adapter kit for installation?
No. This breaker is engineered to match the physical dimensions of the original hardware and installs directly into classic Zinsco Type QC panels without any aftermarket adapters.
What wire gauge range do the box lugs on the UBIZ290 accept?
The terminals are rated to accept wire sizes from 14 AWG up to 2 AWG. Electricians must select the appropriate conductor size for a 90-amp load in accordance with local electrical codes.
Is the UBIZ290 suitable for HVAC applications?
Yes, this breaker is HACR rated, meaning it is tested and approved for use with heating, air conditioning, and refrigeration equipment requiring a 90-amp circuit.
Is the Connecticut Electric UBIZ290 safety certified?
Yes, the UBIZ290 is ETL listed to UL Standard 489 for molded case circuit breakers in the United States and Canada.
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