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Federal Pacific HFJ434150 Molded Case Circuit Breaker
- 150A
- 3 Pole
- Bolt-On
Federal Pacific
HFJ434150
Molded Case Circuit Breaker
Brand
Federal Pacific
SKU
HFJ434150
Quantity
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Federal Pacific HFJ434150 - 150A 3 Pole Molded Case Circuit Breaker
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Description
Designed to support existing infrastructure, the Federal Pacific HFJ434150 is a 150A, 3-pole commercial circuit breaker. It delivers essential thermal-magnetic protection for three-phase industrial applications. This unit bolts into legacy Federal Pacific panelboards, providing an exact match for aging equipment. It successfully replaces the discontinued NFJ434150 breaker, allowing facilities to maintain code compliance without full panel replacements.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | HFJ434150-R |
| Series | HFJ |
| Amperage | 150A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 22kA @ 480VAC |
| Frame Type | HFJ |
|---|---|
| Terminal Type | Lugs |
| For Use With | Federal Pacific Panelboards and Switchboards |
| 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 |
| Standards | UL 489, NEMA AB-1 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | High Interrupting Capacity, HACR Rated |
Product FAQs
6 answersCan the HFJ434150 replace the discontinued NFJ434150 breaker?
Yes. The HFJ434150 serves as a direct replacement for the obsolete NFJ434150. It bolts into the same legacy Federal Pacific panelboards without requiring mounting adapters, while offering a higher 22kAIC interrupting rating at 480V compared to the 18kAIC of the NFJ model.
What type of enclosures accept the HFJ434150 circuit breaker?
This unit is designed specifically for legacy Federal Pacific panelboards and switchboards that accommodate H-Frame molded case breakers. It is not compatible with standard residential load centers.
What is the frame size of the HFJ434150?
This breaker is built on a 225A maximum H-Frame chassis, but is factory-calibrated with a 150A fixed thermal-magnetic trip unit for specific load protection.
Does the HFJ434150 use the Stab-Lok connection system?
No. The HFJ434150 is a commercial bolt-on molded case circuit breaker. It does not utilize the residential Stab-Lok plug-on design associated with certain legacy Federal Pacific load centers.
What conductor materials are supported by the HFJ434150 lugs?
The standard mechanical lugs are rated for both copper and aluminum (AL/CU) conductors. They accept wire sizes ranging from 4 AWG up to 350 kcmil.
Can the trip settings on the HFJ434150 be adjusted in the field?
No. This breaker is equipped with a fixed thermal and fixed magnetic trip unit. The long-time and instantaneous protection parameters are factory-set and cannot be modified.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 1 review.
Total 5 star reviews: 1 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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Rating
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.