Zinsco UBIZ2020 20/20A Tandem Miniature Circuit Breaker
- 20/20A
- 1 Pole
- Plug-On
Zinsco
UBIZ2020
20/20A Tandem Miniature Circuit Breaker
Brand
Zinsco
SKU
UBIZ2020
Quantity
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Zinsco UBIZ2020 - 20/20A Tandem Miniature Circuit Breaker
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Description
Designed for residential power distribution, this 20/20A tandem unit serves as a drop-in substitute for hard-to-find Zinsco R3820 and RC3820 components. It installs into both Zinsco and Sylvania load centers, ensuring proper busbar connection for safe operation. The breaker carries HACR and SWD ratings, making it suitable for air conditioning equipment and standard switching duties in older homes.Specifications
| Brand | Zinsco |
|---|---|
| Series | UBIZ |
| Amperage | 20/20A |
| Poles | 1 |
| Mounting Style | Plug-On |
| Voltage | 120VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Zinsco Load Centers, Sylvania Load Centers |
| Wire Gauge | 14-8 AWG |
| Max Wire | 8 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Special Classification | Tandem |
|---|---|
| Standards | HACR, SWD, UL 489 |
| Approval | ETL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, SWD Rated, Tandem |
Product FAQs
5 answersWhich electrical panels are compatible with the UBIZ2020?
This breaker is designed specifically for legacy Zinsco and GTE Sylvania load centers that accept plug-on Type R or UBIZ circuit breakers.
What original circuit breaker does the UBIZ2020 replace?
It serves as a direct aftermarket replacement for the obsolete Zinsco, Sylvania, and Challenger RC38-20 (or R3820) twin 20-amp breakers.
How much panel space does the UBIZ2020 tandem breaker require?
It requires only a single 3/4-inch pole space in the load center, allowing you to add two independent 20-amp circuits without taking up two full spaces.
What wire gauge is compatible with the UBIZ2020 terminals?
The breaker's lugs are designed to accept wire sizes ranging from 14 AWG to 8 AWG.
Is it safe to install a new UBIZ2020 in an original Zinsco panel?
Yes, these are newly manufactured, ETL-listed breakers built to modern UL 489 standards. However, because legacy Zinsco panels are prone to bus bar damage, a licensed electrician must inspect the panel's bus connections for pitting or burning before installation.
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