Zinsco UBIZ20 Miniature Circuit Breaker
- 20A
- 1 Pole
- Plug-On
Zinsco
UBIZ20
Miniature Circuit Breaker
Brand
Zinsco
SKU
UBIZ20
Quantity
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Zinsco UBIZ20 - 20A 1 Pole Miniature Circuit Breaker
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Quantity
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Description
Providing a reliable solution for vintage enclosures, this 20A single-pole unit acts as a drop-in substitute for the obsolete Q20. It features a thick-series housing designed specifically for Type Q Zinsco load centers. With its SWD classification, the component safely handles the daily switching of fluorescent lighting loads in residential applications, ensuring continued operation of older electrical infrastructure without requiring complete upgrades.Specifications
| Brand | Zinsco |
|---|---|
| Series | UBIZ |
| Amperage | 20A |
| Poles | 1 |
| Mounting Style | Plug-On |
| Voltage | 120VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120VAC |
| Terminal Type | Box Lugs |
|---|---|
| For Use With | Zinsco Load Centers (Type Q) |
| Wire Gauge | 14-4 AWG |
| Max Wire | 4 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Standards | HACR, SWD, UL 489 |
|---|---|
| Approval | ETL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, SWD Rated |
Product FAQs
7 answersWhat load centers are compatible with the UBIZ20 circuit breaker?
The UBIZ20 is designed specifically for legacy Zinsco load centers that accept Type Q plug-in circuit breakers. It cannot be installed in modern panels from manufacturers like Square D, Siemens, or Eaton.
Which obsolete Zinsco breaker does the UBIZ20 replace?
The UBIZ20 is an aftermarket replacement manufactured by Connecticut Electric for the discontinued Zinsco Q20 (or Q-20) 1-pole 20A circuit breaker.
Is the UBIZ20 safe to use given the known issues with original Zinsco panels?
Yes. While original Zinsco breakers are obsolete due to historical design flaws, the UBIZ20 is a newly manufactured replacement by Connecticut Electric. It is ETL listed and tested to meet modern ANSI/UL 489 safety standards.
How much panel space does the UBIZ20 require?
The UBIZ20 is a standard 1-pole breaker that requires a single 3/4-inch space on the busbar of a compatible Zinsco Type Q load center.
Can the UBIZ20 be used to replace a Zinsco QC20 breaker?
No. The UBIZ20 is a 1-pole breaker designed to replace the Q20. The Zinsco QC20 is a 2-pole breaker. You must match the pole configuration and physical footprint of the original breaker being replaced.
Is the UBIZ20 suitable for HVAC applications?
Yes, the UBIZ20 is HACR rated, making it suitable for use with heating, air conditioning, and refrigeration equipment that requires a 20A circuit.
Can the UBIZ20 be used to switch fluorescent lighting circuits?
Yes, the UBIZ20 is SWD (Switching Duty) rated, meaning it is approved for switching 120V fluorescent lighting loads on a regular basis.
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