Eaton / Cutler-Hammer FDC3050L Molded Case Circuit Breaker

The L suffix indicates that the circuit breaker comes factory-equipped with both line and load terminals (lugs). Breakers without this suffix typically ship with load-side terminals only or without lugs, requiring separate terminal kits for the line side.

The difference lies in their interrupting capacity. For 480V applications, the standard FD frame is rated at 35kAIC, the high-interrupting HFD frame is rated at 65kAIC, and the extra-high FDC frame is rated at 100kAIC. All three share the same physical dimensions and mounting footprint.

Yes. Eaton Series C F-frame thermal-magnetic circuit breakers are suitable for reverse feed use, meaning power can be supplied to either the line or load terminals without affecting the breaker's performance or protection capabilities.

No. The FDC3050L is a Series C F-frame molded case circuit breaker designed for industrial and commercial applications. It is compatible with Eaton Series C panelboards, switchboards, and motor control centers, but will not fit in standard BR or CH residential load centers.

No. The FDC3050L features a fixed thermal and fixed magnetic (LI) trip unit. The trip settings are factory-calibrated and cannot be swapped or adjusted in the field. If you require adjustable trip settings, you will need to look at electronic trip models like the FDE or FDCE.

Yes. All Eaton Series C F-frame molded case circuit breakers, including the FDC3050L, are fully HACR rated. This means they are certified for use with heating, air conditioning, and refrigeration equipment that requires group motor protection.

Yes. While primarily used in AC systems, this breaker is also rated for DC applications with an interrupting capacity of 22kA at 250VDC. This makes it suitable for specific industrial control and battery system applications.

You can test the mechanical operation of the breaker by pressing the Push-to-Trip button located on the front of the unit. This will manually trip the breaker and verify that the operating mechanism is functioning correctly. It is recommended to periodically exercise the breaker using this button.