Eaton / Cutler-Hammer JD3175 Molded Case Circuit Breaker

Yes. Eaton acquired the Westinghouse electrical distribution business. The Cutler-Hammer or Eaton JD3175 is a direct replacement for the legacy Westinghouse JD3175, sharing the same physical dimensions and J-Frame footprint.

Yes, the JD3175 features an interchangeable thermal-magnetic trip unit. This allows you to replace just the trip mechanism if your amperage requirements change, without having to remove the entire breaker frame from the panelboard or switchboard.

The adjustable magnetic trip allows you to set the instantaneous short-circuit response threshold. This is critical for coordinating with downstream devices or preventing nuisance tripping from high inrush currents, such as those generated by large motors.

This J-Frame breaker is designed for use in Eaton Series C panelboards, switchboards, and motor control centers. It mounts directly to the chassis and requires the appropriate hardware kit for your specific enclosure type.

Yes, this model comes standard with line and load side lug terminals. The lugs are rated for aluminum or copper conductors ranging from 4 AWG to 350 kcmil. Always torque the terminals to the manufacturer specifications printed on the breaker faceplate to ensure a secure connection.

Yes, the JD3175 carries a DC rating of 10kA at 250VDC. When applying molded case circuit breakers in DC circuits, ensure you follow Eaton guidelines for wiring multiple poles in series to safely interrupt the DC fault current.