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Federal Pacific NFJ633090 Molded Case Circuit Breaker
- 90A
- 3 Pole
- Bolt-On
Federal Pacific
NFJ633090
Molded Case Circuit Breaker
Brand
Federal Pacific
SKU
NFJ633090
Quantity
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Federal Pacific NFJ633090 - 90A 3 Pole Molded Case Circuit Breaker
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Description
Designed to support aging electrical infrastructure, this 90-amp molded case circuit breaker restores functionality to commercial and industrial facilities. It installs seamlessly into Federal Pacific NFJ panelboards, offering an exact fit for discontinued systems without requiring aftermarket mounting adapters. Featuring a non-interchangeable thermal-magnetic trip unit, it delivers 25kAIC interrupting capacity at 240VAC and 18kAIC at 480VAC to handle demanding fault conditions.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | NFJ633090-R |
| Series | NFJ |
| Amperage | 90A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Federal Pacific NFJ Panelboards |
| Wire Gauge | 4 AWG - 300 kcmil |
| Max Wire | 300 kcmil |
| Min Wire | 4 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Lugs |
| Standards | UL 489, NEMA AB-1 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Non-Interchangeable Trip |
Product FAQs
7 answersWhich panelboards are compatible with the NFJ633090 circuit breaker?
This breaker is designed as an exact drop-in fit for legacy Federal Pacific NFJ panelboards.
Is there a modern direct replacement for the Federal Pacific NFJ633090?
No direct modern replacement exists for this specific N-frame breaker. Maintaining existing Federal Pacific NFJ panelboards requires using exact legacy NFJ series breakers.
How does the NFJ633090 connect to the panelboard and load?
It features a bolt-on mounting configuration for the line side to connect directly to the panelboard bus, and it includes lug terminals on the load side for wire connections.
What wire sizes are accepted by the load side lugs on this breaker?
The load side lugs accept wire sizes ranging from 4 AWG up to 300 kcmil.
Can the NFJ633090 be used in 480V systems with high fault currents?
It can be used in 480VAC systems where the available fault current does not exceed 18kA. For 240VAC systems, it is rated to safely interrupt up to 25kA.
Are the trip settings adjustable on the NFJ633090?
No. This breaker features a non-interchangeable, fixed thermal-magnetic trip unit providing standard long-time and instantaneous (LI) protection.
Is the NFJ633090 part of the Federal Pacific Stab-Lok residential line?
No. The NFJ series is a commercial and industrial molded case circuit breaker with a bolt-on design. It is entirely different from the residential Stab-Lok plug-on breakers.
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Reviews
Review summary
Customers rate this product 4.7 out of 5 based on 3 reviews.
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Rating
3 reviews
- ESEvan S.Verified BuyerReviewingFederal Pacific NFJ631225 - 225A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/11/26Review
Works great!
- RCRalph C.Verified BuyerReviewingFederal Pacific NFJ631150 - 150A 3 Pole Molded Case Circuit BreakerI recommend this productRated 4 out of 5 stars11/10/25Federal Pacific NF J631150 Breaker
Surprised they had it!
Great shape, well packaged. Fast shipping
- KPKeith P.ReviewingFederal Pacific NFJ631200 - 200A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars12/15/20Quick and easy ordering
Quick and easy ordering