FDB3175 – EATON 3P 175A 600V BREAKER

The FDB frame is an industrial/commercial MCCB intended for Eaton and Cutler-Hammer compatible panelboards and switchboards that accept FDB-frame breakers — it is not designed for residential loadcentres like BR or CH panels. Because enclosure compatibility depends on the specific panelboard series and mounting configuration, we recommend sending us your panelboard model number so we can confirm a proper fit before you order.

Yes — Eaton is the successor to Cutler-Hammer, and FDB-frame breakers have been carried forward under the Eaton brand with the same frame dimensions and ratings. The ETNFDB3175 is generally a direct drop-in replacement for a Cutler-Hammer FDB3175, provided the panelboard and interrupting-rating requirements of your installation are met. Contact us if you need help cross-referencing your existing breaker.

The Eaton FDB-frame breakers carry a standard interrupting rating of 18,000–22,000 AIR (amperes interrupting rating) at 600V AC, depending on the specific variant. For installations governed by the Canadian Electrical Code (CEC), the breaker's interrupting rating must equal or exceed the available fault current at the point of installation. If your application requires a higher AIC rating, Eaton offers higher-interrupting versions within the FDB frame family. Reach out to our team and we'll help you select the right variant.