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Federal Pacific NB221070 Miniature Circuit Breaker
- 70A
- 2 Pole
- Bolt-On
Federal Pacific
NB221070
Miniature Circuit Breaker
Brand
Federal Pacific
SKU
NB221070
Quantity
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Federal Pacific NB221070 - 70A 2 Pole Miniature Circuit Breaker
New
Quantity
Quantity
Federal Pacific NB221070 - 70A 2 Pole Miniature Circuit Breaker
New
Quantity
| Brand | Federal Pacific |
|---|---|
| Part Number | NB221070 |
| Series | NB |
| Amperage | 70A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | NB |
|---|---|
| Terminal Type | Lugs |
| For Use With | Federal Pacific NBLP, NBC, NBDP, CDP Panelboards |
| Wire Gauge | 4-1/0 AWG (Al/Cu) |
| 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 |
| Accessories | Load Side Lugs Included |
|---|---|
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Common Trip |
Quantity
Federal Pacific NB221070 - 70A 2 Pole Miniature Circuit Breaker
Re-Certified
Quantity
| Brand | Federal Pacific |
|---|---|
| Part Number | NB221070-R |
| Series | NB |
| Amperage | 70A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | NB |
|---|---|
| Terminal Type | Lugs |
| For Use With | Federal Pacific NBLP, NBC, NBDP, CDP Panelboards |
| Wire Gauge | 4-1/0 AWG (Al/Cu) |
| 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 |
| Accessories | Load Side Lugs Included |
|---|---|
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Common Trip |
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Description
Maintaining aging infrastructure requires precise components, and this 70A, two-pole unit delivers reliable thermal-magnetic protection for commercial applications. Designed to bolt into Federal Pacific NBLP, NBC, NBDP, and CDP panelboards, it ensures a secure connection without modifications. For modern alternatives, this model is replaced by the UBIF270NB. Featuring a 10kAIC rating at 120/240VAC, it provides essential short-circuit defense and includes load side lugs.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | NB221070 |
| Series | NB |
| Amperage | 70A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | NB |
|---|---|
| Terminal Type | Lugs |
| For Use With | Federal Pacific NBLP, NBC, NBDP, CDP Panelboards |
| Wire Gauge | 4-1/0 AWG (Al/Cu) |
| 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 |
| Accessories | Load Side Lugs Included |
|---|---|
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Common Trip |
Product FAQs
5 answersWhich panelboards accept the Federal Pacific NB221070 circuit breaker?
This 2-pole breaker is designed to bolt directly into legacy Federal Pacific NBLP, NBC, NBDP, and CDP commercial panelboards.
Is there a modern replacement available for the Federal Pacific NB221070?
Yes. Connecticut Electric manufactures the UBIF270NB, which serves as a direct, ETL-listed replacement for the original FPE NB221070 breaker.
Can the NB221070 be installed in a residential Stab-Lok load center?
No. The NB series features a bolt-on connection designed for commercial panelboards. It is not compatible with residential Stab-Lok panels, which require plug-on NA or NC series breakers.
What wire sizes and materials are compatible with the NB221070 lugs?
The load terminals accept both aluminum and copper conductors ranging from 4 AWG to 1/0 AWG.
How does the thermal-magnetic trip unit function on the NB221070?
The fixed thermal-magnetic mechanism provides dual protection, utilizing a bimetallic strip for long-time overload protection and an electromagnetic assembly for instantaneous short-circuit tripping.
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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.