Federal Pacific HFJ424125 Molded Case Circuit Breaker
- 125A
- 2 Pole
- Bolt-On
Quantity
Federal Pacific HFJ424125 - 125A 2 Pole Molded Case Circuit Breaker
New
Quantity
Description
Supplying 125 amps of thermal-magnetic protection, this two-pole molded case circuit breaker supports heavy-duty industrial and commercial power distribution. The bolt-on design integrates flawlessly into original Federal Pacific panels and switchgear. It functions as a precise substitute for the NFJ424125, ensuring a hassle-free maintenance swap. Rated for 65kAIC at 240V and 22kAIC at 480V, the unit guarantees exceptional safety and performance for aging electrical networks.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | HFJ424125 |
| Series | HFJ |
| Amperage | 125A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC |
| Phase | 1 |
| AIC Rating | 65kA @ 240VAC, 22kA @ 480VAC |
| Frame Type | HFJ |
|---|---|
| Terminal Type | Lugs |
| For Use With | Federal Pacific Panels and Switchgear |
| Wire Gauge | 4 AWG - 350 kcmil |
| Max Wire | 350 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 | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | High Interrupting Capacity, Non-Interchangeable Trip |
Product FAQs
5 answersWhat equipment is the Federal Pacific HFJ424125 compatible with?
This breaker is designed for use in legacy Federal Pacific panels and switchgear that accept H-Frame molded case circuit breakers.
What is the maximum frame size for the Federal Pacific HFJ series?
The HFJ frame has a maximum capacity of 225 amps. The HFJ424125 model utilizes this frame but is equipped with a 125-amp fixed thermal-magnetic trip unit.
Can the trip settings on the HFJ424125 be adjusted in the field?
No. This breaker features a fixed thermal and fixed magnetic trip unit, meaning the long-time and instantaneous trip thresholds cannot be modified.
Is the Federal Pacific HFJ424125 still in active production?
No, Federal Pacific is no longer manufacturing circuit breakers. The HFJ series is a legacy product, so exact replacements rely on existing inventory of original Federal Pacific units.
Is the HFJ424125 part of the Federal Pacific Stab-Lok residential line?
No. The HFJ424125 is a commercial and industrial molded case circuit breaker with a bolt-on connection. It is not part of the residential Stab-Lok series.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 1 review.
- JMJimmy M.Verified BuyerReviewingFederal Pacific HFJ631225 - 225A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/9/26FPE HFJ631225
Super Breakers always comes through for me. Had a customer who’s sub breaker feeding the office went out and Rick with Super Breakers was very helpful finding the exact replacement.
I recommend them to anyone.