Built for industrial environments, the Square D FHL36060 is a 60A, 3-pole molded case circuit breaker. Part of the legacy F-frame series, it delivers robust thermal-magnetic protection with fixed LI trip functions. This unit-mount MCCB is designed for Square D enclosures, switchboards, and motor control centers. For modern upgrades, it is replaced by the PowerPact HGL36060 using a retrofit kit. It features a high interrupting capacity of 25 kAIC at 480VAC and is HACR rated for HVAC use.
What is the difference between the Square D FHL36060 and the FAL36060?
Both are 60A, 3-pole F-frame circuit breakers, but the FHL36060 features a higher interrupting capacity. The FHL is rated at 25kAIC at 480VAC, whereas the standard FAL series has a lower interrupting rating for the same voltage.
What is the modern replacement for the legacy FHL36060 circuit breaker?
The legacy F-frame FHL36060 is typically replaced by the modern PowerPact H-frame series, specifically the HGL36060. Upgrading to the PowerPact series may require a retrofit kit depending on your existing enclosure or panelboard.
What types of equipment are compatible with the FHL36060?
This unit-mount molded case circuit breaker is designed for use in Square D enclosures, switchboards, and motor control centers that accept legacy F-frame breakers. It features a feed-thru connection type for standard lug-to-lug wiring.
What wire sizes are accepted by the lugs on the FHL36060?
The feed-thru lugs on this breaker accept copper or aluminum wire ranging from 14 AWG to 1/0 AWG. Ensure proper torque specifications are followed during installation to prevent terminal overheating.
Can the FHL36060 be used in DC power applications?
Yes, this thermal-magnetic breaker is rated for use in DC circuits up to 250VDC with an interrupting capacity of 10kAIC, making it suitable for specific industrial control and battery applications.
What type of trip unit does the FHL36060 use?
It features a thermal-magnetic trip unit with fixed Long-Time and Instantaneous (LI) functions. The thermal element provides overload protection, while the magnetic element responds to short-circuit faults.
Is it safe to use the FHL36060 in high fault-current environments?
The FHL36060 is designed for higher fault currents than standard F-frame breakers, offering up to 65kAIC at 240VAC and 25kAIC at 480VAC. Always verify the available fault current at the installation point does not exceed these ratings to ensure safe operation.
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Review summary
Customers rate this product 4.7 out of 5 based on 3 reviews.