Zinsco UBIZ3030 30/30A Tandem Miniature Circuit Breaker
- 30/30A
- 1 Pole
- Plug-On
Quantity
Zinsco UBIZ3030 - 30/30A Tandem Miniature Circuit Breaker
New
Quantity
Description
Built specifically for vintage residential electrical systems, this 30/30A tandem breaker safely manages higher-draw circuits in a compact footprint. It serves as an exact cross-reference for the original Zinsco R3830, mounting into Type R load centers with standard box lug terminals. By utilizing a thin series profile, it helps facility managers and electricians add circuits to fully populated legacy panels.Specifications
| Brand | Zinsco |
|---|---|
| Part Number | UBIZ3030 |
| Series | UBIZ |
| Amperage | 30/30A |
| 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 R) |
| 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 | UL 489 |
| Approval | ETL |
| Temp Rating | 40C |
| Construction Features | Tandem, Thin Series |
Product FAQs
5 answersWhat load centers are compatible with the UBIZ3030 breaker?
This breaker is designed exclusively for legacy Zinsco and Sylvania electrical panels that accept Type R plug-in circuit breakers.
Which original Zinsco part number does the UBIZ3030 replace?
The UBIZ3030 serves as a direct aftermarket replacement for the original Zinsco R3830 twin circuit breaker.
How much panel space does this tandem breaker require?
It provides two independent 30A circuits while occupying only a single 0.75-inch pole space, making it ideal for expanding capacity in fully populated legacy panels.
Do the two 30A circuits on this breaker trip simultaneously?
No, this twin breaker features an independent trip mechanism. An overload or short circuit on one 30A line will trip that specific circuit without interrupting power to the other.
Is this aftermarket replacement breaker safety certified?
Yes, this breaker is manufactured by Connecticut Electric and is ETL Listed to UL Standard 489 for safe installation in legacy Zinsco load centers.
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