Eaton Logo

C440 XT0E overload wiring and dial settings when using current transformers?

For overload wiring to current transformers see attached. C440_CT_pub51612[1].pdf

please see attached for adjustment settings based on CT's used. C440 OL CT Adjustments.doc

To further calculate your setting use the following formula.

Divide the CT Ratio.

300/5 = 60

Take Full Load Amps of Motor and divide by CT ratio

FLA/60 = Dial Setting of the 1-5A Overload Relay Required. 

Eaton Logo