Square D FHL360201212 Molded Case Circuit Breaker

The 1212 catalog suffix means this breaker includes a factory-installed 1A/1B auxiliary switch. This allows for remote status signaling and automatic tracking of the breaker's open or closed position within your control system.

Yes, the FHL series shares the exact same physical F-Frame dimensions and mounting footprint as the standard FAL series, but provides a higher interrupting capacity (25kA vs. 18kA at 480VAC). It will drop directly into existing legacy Square D switchboards and motor control centers.

The legacy Square D F-Frame series has been superseded by the PowerPact B-Frame and H-Frame molded case circuit breakers. When replacing an FHL breaker in a newer panel or upgrading a system, a PowerPact equivalent with a factory-installed auxiliary switch is typically used.

The FHL360201212 is a unit-mount breaker, meaning it does not plug onto a busbar or use an I-Line connection. It bolts directly to the backpan or mounting plate and wires point-to-point using the integrated line and load lugs.

Yes, this feed-thru breaker comes standard with mechanical lugs on both the line and load sides. They are dual-rated for both copper (Cu) and aluminum (Al) conductors ranging from 14 AWG to 1/0 AWG.

Yes, in addition to its AC ratings, this thermal-magnetic breaker is rated for up to 250VDC with a 10kA interrupting capacity, making it suitable for industrial DC power distribution and control circuits.

The breaker uses a fixed thermal element to protect against sustained overloads (Long-Time) and a fixed magnetic element to instantly clear severe short circuits (Instantaneous). Both functions are non-adjustable on this specific 20A model.