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Wadsworth A2100NI Miniature Circuit Breaker
- 100A
- 2 Pole
- Plug-On
Wadsworth
A2100NI
Miniature Circuit Breaker
Brand
Wadsworth
SKU
A2100NI
Quantity
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Wadsworth A2100NI - 100A 2 Pole Miniature Circuit Breaker
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Wadsworth A2100NI - 100A 2 Pole Miniature Circuit Breaker
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| Brand | Wadsworth |
|---|---|
| Part Number | A2100NI |
| Series | A |
| Amperage | 100A |
| 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 |
| Standards | UL 489 |
|---|---|
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated |
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Wadsworth A2100NI - 100A 2 Pole Miniature Circuit Breaker
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Quantity
| Brand | Wadsworth |
|---|---|
| Part Number | A2100NI |
| Series | A |
| Amperage | 100A |
| 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 |
| Standards | UL 489 |
|---|---|
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated |
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Description
A drop-in solution for aging electrical systems, the Wadsworth A2100NI is a 100-amp, two-pole breaker rated for 120/240V applications. It installs seamlessly into classic Wadsworth Type A load centers, providing an exact OEM match for main or large feeder circuits. The unit features standard 10kAIC interrupting capacity, non-interchangeable construction, and HACR certification for HVAC loads. For updated aftermarket options, this model is cross-referenced to the UBIA2100NI replacement.Specifications
| Brand | Wadsworth |
|---|---|
| Part Number | A2100NI |
| Series | A |
| Amperage | 100A |
| 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 |
| Standards | UL 489 |
|---|---|
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated |
Product FAQs
6 answersWhich load centers accept the Wadsworth A2100NI breaker?
This breaker is designed specifically for classic Wadsworth Type A load centers. It features a proprietary plug-on design that is not interchangeable with other breaker brands or panel types.
What is the direct aftermarket replacement for the Wadsworth A2100NI?
The Connecticut Electric UBIA2100NI is the direct, UL-listed aftermarket replacement for this breaker, designed to fit the same Wadsworth Type A panels.
Is the Wadsworth A2100NI suitable for protecting HVAC equipment?
Yes, this breaker is HACR rated, meaning it is approved for use with heating, air conditioning, and refrigeration motor loads.
What does the LI trip function code mean on the A2100NI?
The LI designation indicates a thermal-magnetic trip unit that provides a Long-Time delay for standard overload protection and an Instantaneous trip response to clear short circuits.
How is the A2100NI secured inside the panel?
It utilizes a plug-on mounting style that snaps directly onto the busbar of a Wadsworth Type A load center, requiring no mounting bolts or screws.
Can the A2100NI be used as a main breaker?
Yes, this 100-amp breaker is frequently used as a main breaker or for large feeder circuits in Wadsworth panels, provided the available fault current does not exceed its 10kAIC rating.
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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.