Rated 65 kAIC at 240V, this 200A, 2-pole molded case circuit breaker belongs to Federal Pacific's legacy H-Frame family. It delivers robust protection for commercial circuits. Designed for seamless integration, the bolt-on breaker installs into Federal Pacific panelboards. It is the exact replacement for discontinued NFJ424200 and UBIHFJ2200 breakers. The unit features a fixed, non-interchangeable trip and includes load-side lugs. It ensures reliable performance during severe overcurrents.
High Interrupting Capacity, Non-Interchangeable Trip
Product FAQs
6 answers
What equipment is the HFJ424200 circuit breaker designed for?
It is designed for use in legacy Federal Pacific panelboards and switchgear that accept H-frame or HFJ-frame bolt-on circuit breakers.
Can I use this to replace an existing 200A HFJ breaker?
Yes, this serves as a direct replacement for existing 200A, 2-pole Federal Pacific HFJ frame breakers in compatible FPE distribution equipment.
What type of protection does the LI trip unit provide?
The fixed thermal-magnetic trip unit provides Long-Time (L) protection for sustained overloads and Instantaneous (I) protection for immediate short-circuit clearing.
Does this breaker require a specific mounting hardware kit?
Yes, as a bolt-on breaker, it requires the appropriate Federal Pacific mounting hardware kit, such as the NFJ1K, to properly secure it to the panel busbars.
Are HFJ frame breakers sold under any other brand names?
Yes, HFJ frame breakers are sometimes found under the Challenger brand, as Challenger acquired certain Federal Pacific product lines. Always verify panel compatibility before installing cross-branded replacements.
Is the HFJ424200 part of the Federal Pacific Stab-Lok series?
No. The HFJ424200 is a commercial and industrial molded case circuit breaker. It is not part of the Federal Pacific Stab-Lok line of residential load center breakers, which are known for safety issues.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 1 review.
Federal Pacific HFJ631225 - 225A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
7/9/26
FPE 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.