Eaton / Cutler-Hammer DK3250 Molded Case Circuit Breaker

The DK3250 is designed for Eaton and Cutler-Hammer Series C panelboards, motor control centers, and switchboards configured to accept K-Frame molded case circuit breakers.

Yes. Eaton acquired both the Westinghouse distribution equipment business and Cutler-Hammer. A DK3250 breaker branded as Eaton, Cutler-Hammer, or Westinghouse will share the same physical dimensions, mounting footprint, and K-Frame electrical specifications.

No, the DK frame is limited to a maximum operating voltage of 240V AC or 250V DC. If your application requires 480V or 600V ratings, you must use a different Series C K-Frame breaker, such as a KD or HKD model.

Within the Eaton Series C K-Frame family, the prefixes denote maximum voltage and interrupting capacities. The DK3250 is rated for 240V AC maximum. KD and HKD frames are built to handle higher voltage ratings up to 600V AC with varying interrupting capacities.

Yes, this feed-thru breaker is supplied with standard pressure terminal lugs on both the line and load sides. The lugs are rated for aluminum or copper conductors sized from 3 AWG to 350 kcmil.

No, the DK3250 features fixed thermal and fixed magnetic trip mechanisms. It provides standard Long Time and Instantaneous (LI) protection functions that cannot be altered in the field.

Yes, Eaton Series C K-Frame breakers with fixed non-interchangeable thermal-magnetic trip units, like the DK3250, are suitable for reverse feed use. Always verify compliance with local electrical codes and panelboard labeling before backfeeding.

No, this model is equipped with a standard thermal-magnetic trip unit offering only long-time and instantaneous overcurrent and short-circuit protection. It does not provide built-in ground fault (GFPE) capabilities.

As part of the Eaton Series C K-Frame family, this breaker can accept a variety of internal and external accessories, including shunt trips, auxiliary switches, undervoltage releases, and rotary or flange operating mechanisms.