Eaton / Cutler-Hammer CAH2225 Molded Case Circuit Breaker

This unit-mount breaker is designed specifically for Eaton and Cutler-Hammer group metering, metering stacks, and Type ECC unit enclosures.

The CAH2225 is the high-interrupting capacity version of the standard CA2225. The CAH frame provides a 22kAIC rating at 240VAC, whereas the standard CA frame is rated for 10kAIC.

Yes. If your system requires a higher fault current rating, the HCA2225 is the ultra-high interrupting capacity version in the same legacy C-Frame family, offering a 42kAIC rating at 240VAC.

The CAH2225 is a legacy C-Frame breaker. For modern upgrades in Type ECC enclosures or group metering, this breaker typically crosses over to the CCVH2225 substitute. Always verify physical fitment and panel labeling before upgrading.

The LI designation means the thermal-magnetic trip unit provides fixed Long-Time (L) and fixed Instantaneous (I) protection. The long-time function handles sustained overloads, while the instantaneous function clears short circuits.

Yes. When terminating aluminum wire in the line and load lugs, you must apply a listed joint compound to the conductors to prevent oxidation and ensure a reliable connection.

The CAH2225 is a feed-thru, unit-mount breaker. It bolts directly to the backpan or mounting bracket of the enclosure using hardware, rather than plugging into a busbar.