Square D FH36030 Molded Case Circuit Breaker

The FH36030 is designed exclusively for Square D I-Line panelboards and switchboards. It uses a plug-on line-side connection to interface directly with the interior bus structure.

The physical F-Frame dimensions and I-Line mounting footprints are identical, but they differ in interrupting capacity (AIC). The FH series features a higher interrupting rating, providing 25kA at 480VAC, compared to the standard 18kA at 480VAC offered by the FA series.

This breaker utilizes an I-Line style plug-in mounting system. The line side features blow-on jaw connectors that snap directly onto the panel bus, while the load side uses traditional mechanical lugs for wiring. No fastening hardware is required for the line-side bus connection.

Yes, this thermal-magnetic breaker is rated for up to 250VDC with an interrupting capacity of 10kA. This allows it to be utilized in industrial DC distribution and control circuits.

Schneider Electric has transitioned the legacy F-Frame series to the newer PowerPact platform. The direct modern replacement for the FH36030 is the PowerPact H-Frame HGA36030, which matches the physical footprint and I-Line mounting configuration while meeting or exceeding the original interrupting ratings.

The standard mechanical lugs on the FH36030 accept either copper or aluminum conductors ranging from 14 AWG to 4 AWG. Installers must torque the load-side wiring to the exact inch-pound specifications printed on the breaker label, which vary based on the specific wire gauge used.