Eaton/Cutler-Hammer FD3050L Circuit Breaker

The "L" suffix in the FD3050L catalog number indicates that the circuit breaker comes with factory-installed line and load lugs. The standard FD3050 is the base breaker and may not include these terminals out of the box.

Yes. Eaton Series C F-frame thermal-magnetic circuit breakers are suitable for reverse feed applications. They do not have restricted line and load markings, allowing power to be supplied from either the top or bottom terminals.

Yes, this thermal-magnetic breaker is rated for use in DC applications up to 250VDC. When wiring for DC, multiple poles are typically wired in series depending on the grounded or ungrounded configuration of the system.

The FD3050L is an F-frame breaker designed to mount in Eaton and Cutler-Hammer Series C panelboards, switchboards, motor control centers, and standalone enclosures.

To maintain the UL489 listing, internal accessories such as auxiliary switches, alarm contacts, or shunt trips must be factory-installed. The F-frame circuit breakers are factory sealed, and opening them to add accessories will void the UL label.

Yes, the standard line and load lugs included with the FD3050L are dual-rated for both copper and aluminum conductors ranging from 14 AWG to 1/0 AWG. When using aluminum wire, Eaton recommends applying a suitable joint compound to prevent terminal overheating.

No. This breaker uses a thermal-magnetic trip unit with fixed thermal and fixed magnetic settings for its long-time and instantaneous protection. If you require adjustable trip settings, you would need an F-frame breaker with an electronic trip unit, such as the FDE series.