Federal Pacific NFJ424225 Molded Case Circuit Breaker
- 225A
- 2 Pole
- Bolt-On
Quantity
Federal Pacific NFJ424225 - 225A 2 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Supplying 225 amps of continuous current capacity, this legacy molded case breaker safeguards commercial branch circuits against overloads and short circuits. The hardware bolts into standard Federal Pacific panelboards, eliminating the need for complex retrofits or aftermarket mounting kits. Equipped with fixed thermal and magnetic trip elements, it achieves an 18kA interrupt rating at 480VAC to meet rigorous facility standards.Specifications
| Brand | Federal Pacific |
|---|---|
| Series | NFJ |
| Amperage | 225A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC |
| Phase | 1 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480VAC |
| Frame Type | NFJ |
|---|---|
| Terminal Type | Lugs |
| For Use With | Federal Pacific 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 Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release |
|---|---|
| Accessories | Line and Load Lugs Included |
| Standards | UL 489, NEMA AB-1 |
| Approval | UL |
| Temp Rating | 40C |
Product FAQs
4 answersWhat panelboards are compatible with the NFJ424225 circuit breaker?
This breaker is designed to bolt directly into legacy Federal Pacific (FPE) commercial panelboards that accept N-Frame molded case circuit breakers.
Is the NFJ424225 associated with the FPE Stab-Lok residential breakers?
No. The NFJ424225 is a commercial-grade, bolt-on molded case circuit breaker from the N-Frame family. It is entirely separate from the residential Stab-Lok plug-on breaker line.
How does the trip unit operate on the NFJ424225?
It utilizes a fixed thermal-magnetic trip unit providing long-time and instantaneous (LI) protection. The thermal element responds to sustained overloads, while the magnetic element trips immediately during short-circuit faults.
What conductor sizes are supported by the NFJ424225 lugs?
The factory lugs accept wire sizes from 4 AWG to 300 kcmil. Ensure proper torque specifications are followed during installation to maintain a secure connection in demanding commercial environments.
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Reviews
Review summary
Customers rate this product 4.7 out of 5 based on 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