Federal Pacific HFJ424090 Molded Case Circuit Breaker
- 90A
- 2 Pole
- Bolt-On
Quantity
Federal Pacific HFJ424090 - 90A 2 Pole Molded Case Circuit Breaker
New
Quantity
Description
Built for commercial and industrial applications, this 90A H-Frame molded case circuit breaker provides reliable long-time and instantaneous trip functions. It mounts into legacy Federal Pacific panelboards and switchgear without requiring adapters. This unit serves as an exact drop-in replacement for the discontinued NFJ424090 model. Featuring a robust 65kAIC rating at 240VAC, it ensures superior fault protection for older electrical systems while maintaining original equipment specifications.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | HFJ424090 |
| Series | HFJ |
| Amperage | 90A |
| 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, Undervoltage Release, Auxiliary Switch |
|---|---|
| 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, Quick-Make/Quick-Break, Trip-Free Mechanism |
Product FAQs
6 answersWhat equipment is the HFJ424090 circuit breaker designed for?
This 2-pole breaker is engineered specifically for legacy Federal Pacific panels and switchgear that require an HFJ frame bolt-on breaker.
What are the short-circuit interrupting ratings for the HFJ424090?
This thermal-magnetic breaker is rated for 65 kAIC at 240VAC and 22 kAIC at 480VAC, making it suitable for commercial and industrial distribution systems requiring these fault levels.
What wire gauge range is supported by the HFJ424090 terminals?
The standard lug terminals accommodate conductors from 4 AWG up to 350 kcmil. Ensure proper torque specifications are followed during installation.
How is the HFJ424090 installed into the electrical panel?
It utilizes a bolt-on mounting style, meaning the breaker must be mechanically bolted directly to the busbars of the Federal Pacific enclosure.
Are the trip settings adjustable on the HFJ424090?
No, this breaker features a fixed thermal and fixed magnetic trip unit. It provides standard long-time and instantaneous (LI) protection without adjustable dials.
Is the Federal Pacific HFJ424090 still actively manufactured?
Federal Pacific is a legacy brand, and original HFJ frame breakers are obsolete. They are typically sourced to maintain or repair existing FPE switchgear rather than for new installations.
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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.