Built for heavy-duty applications, the Square D FCP34050 is a 50A, 3-phase molded case circuit breaker. It utilizes fixed thermal and magnetic trip elements to safeguard commercial electrical networks. This F-Frame breaker mounts into standard Square D panelboards and motor control centers using a secure bolt-on connection. Facilities looking for the current generation equivalent can use the HJL36050. It features a non-interchangeable trip design and delivers 100kAIC at 240VAC.
HACR Rated, Extra High Interrupting Capacity, Non-Interchangeable Trip
Product FAQs
5 answers
What types of enclosures accept the FCP34050 circuit breaker?
This legacy F-Frame breaker is designed for bolt-on installation in commercial Square D panelboards, switchboards, and motor control centers. Always verify your specific enclosure labeling to confirm FCP breakers are an approved type.
Is there a current generation replacement for the FCP34050?
Yes, the FCP34050 crosses over to the PowerPact HJL36050 for modern system upgrades. When replacing a legacy F-Frame with a newer H-Frame breaker, consult your panel documentation, as mounting hardware or backpan slot requirements may vary.
Are the thermal and magnetic trip points adjustable on the FCP34050?
No, this breaker features a fixed thermal and fixed magnetic trip unit. The long-time and instantaneous (LI) protection settings are factory calibrated and cannot be modified in the field.
What are the wire gauge requirements for the FCP34050 terminals?
The factory-installed lugs accept wire sizes from 14 AWG up to 1/0 AWG. The terminals are dual-rated for both copper (Cu) and aluminum (Al) conductors.
Can the FCP34050 be used in a standard Square D residential load center?
No. The FCP34050 is a commercial F-Frame molded case circuit breaker built for heavy-duty panelboards and switchboards. It is not physically or electrically compatible with residential QO or Homeline load centers.
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