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Zinsco RC38-20 Miniature Circuit Breaker
- 20A
- 2 Pole
- Plug-On
Zinsco
RC38-20
Miniature Circuit Breaker
Brand
Zinsco
SKU
RC38-20
Quantity
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Zinsco RC38-20 - 20A 2 Pole Miniature Circuit Breaker
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Zinsco RC38-20 - 20A 2 Pole Miniature Circuit Breaker
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| Brand | Zinsco |
|---|---|
| Part Number | RC38-20 |
| Series | R |
| Amperage | 20A |
| 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 |
| Wire Gauge | 14-10 AWG (Cu/Al) |
| Max Wire | 10 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Standards | UL 489 |
|---|---|
| Approval | UL, ETL |
| Temp Rating | 40C |
| Construction Features | Common Trip |
Quantity
Zinsco RC38-20 - 20A 2 Pole Miniature Circuit Breaker
Re-Certified
Quantity
| Brand | Zinsco |
|---|---|
| Part Number | RC38-20-R |
| Series | R |
| Amperage | 20A |
| 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 |
| Wire Gauge | 14-10 AWG (Cu/Al) |
| Max Wire | 10 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Standards | UL 489 |
|---|---|
| Approval | UL, ETL |
| Temp Rating | 40C |
| Construction Features | Common Trip |
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Description
Restoring power to vintage residential systems is simple with the Zinsco RC38-20 miniature circuit breaker. This 2-pole, 20-amp component delivers dependable thermal-magnetic protection for 120/240VAC branch circuits. Engineered to mount seamlessly into original Zinsco load centers, the plug-on breaker eliminates the need for retrofitting. For modern upgrades, this legacy unit is replaced by the UBIZ0220 substitute. It features a 10kAIC rating and common trip function.Specifications
| Brand | Zinsco |
|---|---|
| Part Number | RC38-20-R |
| Series | R |
| Amperage | 20A |
| 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 |
| Wire Gauge | 14-10 AWG (Cu/Al) |
| Max Wire | 10 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Standards | UL 489 |
|---|---|
| Approval | UL, ETL |
| Temp Rating | 40C |
| Construction Features | Common Trip |
Product FAQs
6 answersWhat panels accept the Zinsco RC38-20 circuit breaker?
This breaker is designed exclusively for legacy Zinsco load centers that accept plug-in style breakers. It will not fit in modern panels from other manufacturers.
Is there a modern replacement available for the RC38-20?
Yes, Connecticut Electric manufactures a modern, UL-listed drop-in replacement for this obsolete breaker under the catalog number UBIZ0220.
How much panel space does the RC38-20 require?
The RC38-20 features a specialized thin design that fits a 2-pole configuration into a single mounting space, often referred to as a half-size breaker.
What is the difference between the Zinsco RC38-20 and the R38-20?
The RC38-20 is a 2-pole breaker with tied handles designed for a single 240V circuit. The R38-20 is a tandem breaker that provides two independent 120V single-pole circuits. They are not interchangeable.
How can I visually identify the amperage of an original RC38-20 breaker?
Original Zinsco breakers used a color-coded system for their toggles. The 20-amp RC38-20 is identified by its red toggle handles.
Are there safety concerns associated with original Zinsco breakers?
Yes, legacy Zinsco panels and breakers have documented safety issues, including a tendency to fail to trip during overcurrent events and poor busbar connections that can lead to arcing. Upgrading the panel or using modern replacement breakers is highly recommended.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 1 review.
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Rating
1 review
- EAEdward A.ReviewingThomas & Betts RC38-30 2 Pole Circuit BreakerI recommend this productRated 5 out of 5 stars8/13/20Perfect
Thanks a lot.