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Federal Pacific NFJ434225 Molded Case Circuit Breaker
- 225A
- 3 Pole
- Bolt-On
Federal Pacific
NFJ434225
Molded Case Circuit Breaker
Brand
Federal Pacific
SKU
NFJ434225
Quantity
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Federal Pacific NFJ434225 - 225A 3 Pole Molded Case Circuit Breaker
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Description
Designed to support heavy commercial loads, the Federal Pacific NFJ434225 delivers robust 225-amp thermal-magnetic protection. This three-pole molded case circuit breaker operates across 240VAC, 480VAC, and 250VDC systems. It installs seamlessly into existing Federal Pacific NFJ panelboards, serving as an exact fit for aging infrastructure. Facility managers can restore power safely without modifying the original enclosure. It features a 25kAIC rating at 240V and a secure bolt-on connection.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | NFJ434225 |
| Series | NFJ |
| Amperage | 225A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480VAC, 10kA @ 250VDC |
| Frame Type | NFJ |
|---|---|
| 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 Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch |
|---|---|
| Accessories | Lugs |
| Standards | UL 489, NEMA AB-1 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Non-Interchangeable Trip |
Product FAQs
5 answersWhich panelboards are compatible with the NFJ434225 breaker?
This bolt-on breaker is designed specifically for installation in legacy Federal Pacific NFJ panelboards.
What wire sizes are accepted by the lugs on this breaker?
The factory lugs accommodate wire gauges from 4 AWG up to 300 kcmil. Ensure proper torque specifications are followed during installation.
How does the trip unit function on the NFJ434225?
It features a thermal magnetic trip unit with fixed thermal protection for long time overloads and an adjustable magnetic setting for instantaneous short circuit protection.
Is the Federal Pacific NFJ434225 still in active production?
No, Federal Pacific is no longer in business. This is a legacy molded case circuit breaker used to maintain or service existing FPE infrastructure.
Are there specific safety considerations when replacing Federal Pacific breakers?
When servicing legacy Federal Pacific equipment, thoroughly inspect the panelboard busbars for signs of pitting or thermal damage before bolting on the replacement breaker.
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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