Belonging to Square D's legacy F-Frame series, the FHL36035 is a 3-pole molded case circuit breaker engineered for commercial and industrial power distribution. Designed with a unit-mount, feed-thru configuration, it installs seamlessly into compatible enclosures, switchboards, and motor control centers. This 35A breaker provides long-time and instantaneous (LI) thermal-magnetic trip functions.
What type of equipment is the Square D FHL36035 compatible with?
As a unit-mount breaker, the FHL36035 is designed for installation in compatible Square D enclosures, switchboards, and motor control centers. It bolts to a backpan rather than plugging into a busbar.
What is the modern replacement for the legacy FHL36035 circuit breaker?
The FHL36035 is part of the obsolete Square D F-Frame series. The modern replacements are the PowerPact B-Frame and H-Frame series. To meet or exceed the 25kAIC rating at 480V, electricians typically cross-reference to a BGL36035 or HGL36035.
What wire sizes are supported by the FHL36035 lugs?
The standard line and load lugs on this breaker accommodate 14 AWG through 1/0 AWG wire, and are rated for both copper (Cu) and aluminum (Al) conductors.
Does the FHL36035 offer adjustable trip settings?
No, this breaker features a fixed thermal-magnetic trip unit. It provides standard Long-Time and Instantaneous (LI) protection without field-adjustable dials.
Is the FHL36035 rated for direct current (DC) systems?
Yes, alongside its 240VAC, 480VAC, and 600VAC ratings, this breaker is certified for 250VDC applications with a 10kA interrupting capacity.
How is the FHL36035 mounted during installation?
This is a unit-mount, feed-thru circuit breaker. It bolts directly to a mounting pan or bracket and uses standard lugs for both the line and load connections, unlike I-Line breakers which plug directly onto a panelboard bus.
Does the FHL36035 include ground fault or arc fault protection?
No, this is a standard thermal-magnetic breaker providing only overload and short-circuit (LI) protection. It does not include integrated equipment ground fault protection (LSIG) or arc fault capabilities.
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Review summary
Customers rate this product 4.7 out of 5 based on 3 reviews.