Eaton / Cutler-Hammer CH380 Miniature Circuit Breaker

This breaker is designed exclusively for Eaton and Cutler-Hammer CH series loadcenters. It will not fit in BR series or other manufacturer panels.

The CH380 requires three 3/4-inch spaces, taking up a total width of 2.25 inches in the loadcenter.

No. Eaton CH series breakers have a 3/4-inch per pole footprint and a different mounting style, making them incompatible with BR series panels, which require 1-inch per pole breakers.

Yes. Eaton acquired Cutler-Hammer, and they continue to manufacture the CH series under the Eaton brand. The CH380 is the exact same form, fit, and function as the older Cutler-Hammer branded version.

An internal common trip mechanism ensures that if an overload or short circuit occurs on any single phase, all three poles will trip simultaneously, completely disconnecting power to the 3-phase load for safety.

The thermal component provides a delayed trip to prevent nuisance tripping from temporary, mild overloads, while the magnetic component reacts instantaneously to severe short circuits, offering comprehensive circuit protection.

No. It features a standard plug-on mounting style that snaps directly into the bus bar of a compatible CH series loadcenter without the need for additional mounting hardware.

Yes. While rated for a maximum of 240 VAC, this 3-pole breaker is commonly used in 3-phase systems, including 240V Delta or 208Y/120V configurations, depending on the loadcenter's phase arrangement.