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Federal Pacific NB221020 Molded Case Circuit Breaker
- 20A
- 2 Pole
- Bolt-On
Federal Pacific
NB221020
Molded Case Circuit Breaker
Brand
Federal Pacific
SKU
NB221020
Quantity
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Federal Pacific NB221020 - 20A 2 Pole Molded Case Circuit Breaker
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Federal Pacific NB221020 - 20A 2 Pole Molded Case Circuit Breaker
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| Brand | Federal Pacific |
|---|---|
| Part Number | NB221020 |
| Series | NB |
| Amperage | 20A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Federal Pacific NBLP, NBC, NBDP, CDP Panelboards |
| Wire Gauge | 14-2 AWG |
| Max Wire | 2 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Accessories | Load Side Lugs Included |
|---|---|
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Common Trip, HACR Rated |
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Federal Pacific NB221020 - 20A 2 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Federal Pacific |
|---|---|
| Part Number | NB221020-R |
| Series | NB |
| Amperage | 20A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Federal Pacific NBLP, NBC, NBDP, CDP Panelboards |
| Wire Gauge | 14-2 AWG |
| Max Wire | 2 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Accessories | Load Side Lugs Included |
|---|---|
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Common Trip, HACR Rated |
Similar Items
90A 2 Pole Molded Case Circuit Breaker
20A 1 Pole Molded Case Circuit Breaker
Description
Restoring older commercial electrical systems requires exact-fit components like this 20A bolt-on unit. It mounts securely into Federal Pacific NBLP, NBC, NBDP, and CDP panelboards without requiring adapters. Featuring a 10kAIC rating at 120/240V, it provides reliable long-time and instantaneous protection. When original stock is unavailable, the UBIF220NB serves as an exact substitute.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | NB221020-R |
| Series | NB |
| Amperage | 20A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Federal Pacific NBLP, NBC, NBDP, CDP Panelboards |
| Wire Gauge | 14-2 AWG |
| Max Wire | 2 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Accessories | Load Side Lugs Included |
|---|---|
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Common Trip, HACR Rated |
Product FAQs
6 answersWhich panelboards accept the Federal Pacific NB221020 circuit breaker?
This breaker is specifically designed to fit legacy Federal Pacific NBLP, NBC, NBDP, and CDP commercial panelboards. It is a bolt-on molded case breaker and does not fit residential Stab-Lok load centers.
What is the direct aftermarket replacement for the NB221020?
The Connecticut Electric UBIF220NB is an ETL-listed aftermarket replacement that serves as an exact substitute for the original Federal Pacific NB221020.
How does the NB221020 connect to the panel bus?
As a bolt-on molded case circuit breaker, it requires mechanical fasteners to secure the line-side connections directly to the panelboard bus bar. This provides a secure, high-contact-pressure connection suitable for commercial applications with constant power demands.
What wire sizes are compatible with the NB221020 lugs?
The breaker terminal lugs accept wire gauges from 14 AWG to 2 AWG. Ensure proper torque is applied during installation to maintain a secure connection, especially in commercial environments with continuous loads.
What type of protection does the NB221020 trip unit provide?
It utilizes a fixed thermal-magnetic trip unit (LI). The thermal component provides long-time protection against sustained overloads, while the magnetic component offers instantaneous protection against short circuits.
Is the Federal Pacific NB221020 still in active production?
No, Federal Pacific Electric is defunct and original NB series breakers are obsolete. Maintaining these legacy commercial panels requires sourcing verified original stock or utilizing approved aftermarket substitutes.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 18 reviews.
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Rating
18 reviews
- MMMike M.Verified BuyerReviewingFederal Pacific NB100 - 100A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars7/2/26100amp federal pacific breaker
So far the breaker works as expected
Just good to know some of these old federal are still available.
Thank you
- SGscott g.Verified BuyerReviewingFederal Pacific NB111020 - 20A 1 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars6/26/26Hard to find breakers
Had a project at a school built in the 1960’s and thought we were up a creek when confronted with ancient FPE commercial panels. Luckily we found what we needed with Suoerbreakers.
- BFBarry F.Verified BuyerReviewingFederal Pacific NB100 - 100A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars6/13/26Hard to find circuit breaker
Item was as described.
- WWWilliam W.Verified BuyerReviewingFederal Pacific NB100 - 100A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars3/9/26Exactly what I needed.
Awesome! Packaging and delivery were good. Bolted in and worked perfectly!!)
- GHGary H.Verified BuyerReviewingFederal Pacific NB125 - 125A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars3/3/26Federal Pacific NB125 2 Pole Circuit Breaker
Federal Pacific NB125 2 Pole Circuit Breaker
Great product and excellent price and warranty.