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Wadsworth A290NI Miniature Circuit Breaker
- 90A
- 2 Pole
- Plug-On
Wadsworth
A290NI
Miniature Circuit Breaker
Brand
Wadsworth
SKU
A290NI
Quantity
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Wadsworth A290NI - 90A 2 Pole Miniature Circuit Breaker
New
Quantity
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Wadsworth A290NI - 90A 2 Pole Miniature Circuit Breaker
New
Quantity
| Brand | Wadsworth |
|---|---|
| Part Number | A290NI |
| Series | A |
| 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 | Wadsworth Type A Load Centers |
| Wire Gauge | 4 AWG - 1/0 AWG |
| Max Wire | 1/0 AWG |
| Min Wire | 4 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Standards | UL 489 |
|---|---|
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Class CTL |
Sold out
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Wadsworth A290NI - 90A 2 Pole Miniature Circuit Breaker
Re-Certified
Quantity
| Brand | Wadsworth |
|---|---|
| Part Number | A290NI-R |
| Series | A |
| 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 | Wadsworth Type A Load Centers |
| Wire Gauge | 4 AWG - 1/0 AWG |
| Max Wire | 1/0 AWG |
| Min Wire | 4 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Standards | UL 489 |
|---|---|
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Class CTL |
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Description
Rated 10 kAIC at 120/240VAC, this Wadsworth A290NI miniature circuit breaker is engineered for dependable thermal-magnetic protection in residential environments. The 2-pole, 90-amp device features fixed thermal and magnetic trip units to handle everyday electrical demands. It mounts into classic Wadsworth Type A load centers, providing a seamless fit for aging electrical panels that require exact-match components. For updated cross-references, this model is substituted by the UBIA290NI.Specifications
| Brand | Wadsworth |
|---|---|
| Part Number | A290NI |
| Series | A |
| 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 | Wadsworth Type A Load Centers |
| Wire Gauge | 4 AWG - 1/0 AWG |
| Max Wire | 1/0 AWG |
| Min Wire | 4 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Standards | UL 489 |
|---|---|
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Class CTL |
Product FAQs
7 answersWhich load centers accept the Wadsworth A290NI circuit breaker?
This breaker is designed exclusively for installation in legacy Wadsworth Type A load centers. It is not interchangeable with other brands or panel types.
What is the modern replacement catalog number for the A290NI?
Connecticut Electric manufactures aftermarket replacements for obsolete Wadsworth breakers. The direct cross-reference for this 90-amp, 2-pole model is the UBIA290NI.
How is the A290NI secured inside the electrical panel?
It utilizes a plug-on mounting style, meaning it snaps directly onto the busbar of a Wadsworth Type A load center without requiring bolt-on hardware.
What wire gauge range is supported by the terminals on this breaker?
The box lugs on the A290NI accommodate wire sizes from 4 AWG up to 1/0 AWG. Ensure your conductors are sized appropriately for a 90-amp load per local electrical codes.
How does the thermal magnetic trip unit operate during a fault?
The thermal component provides a delayed trip for sustained overloads, while the magnetic component delivers an instantaneous trip to quickly clear severe short circuits.
Can this breaker be used for both 120V and 240V applications?
Yes, as a 2-pole breaker rated for 120/240VAC, it can supply power to 240V loads or feed a subpanel requiring both 120V and 240V circuits.
Is the 10kAIC rating sufficient for residential service panels?
A 10kA interrupting capacity is standard for most legacy residential applications. However, you must verify that the available fault current at your panel does not exceed 10,000 amps before installation.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 5 reviews.
Total 5 star reviews: 5 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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Rating
5 reviews
- PSPaul S.Verified BuyerReviewingWadsworth A15NI - 15A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars7/14/26Worked fine, glad to have it.
I had no idea how much it could cost.
- DPDavid P.Verified BuyerReviewingSquare D 9065ARO1R Overload RelayI recommend this productRated 5 out of 5 stars11/3/25Loved it!
Fantastic!!!
- KJKevin J.ReviewingWadsworth A260NI - 60A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars1/11/24Great deal
Came on time in great shape
- VJVernice J.ReviewingWadsworth A240NI - 40A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars7/16/20Order of Breaker
This company did an excellent job with providing a good part and delivery exceeded my expectations.
- HOHugh O.ReviewingGeneral Electric AF43S Panel Board CoverI recommend this productRated 5 out of 5 stars9/24/17Breaker panel
I recently purchased a breaker panel cover. It arrived in a timely manner well packed and unharmed.
The shipping was free so I was sceptical.
All is well.