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I have an 8910DPA44 with a 120V coil. It is a series B contactor. I am trying to put in a 240V coil out of stock, but it will not go it. What is the problem?

The series B 20A through 40A 4-pole contactors have two rejection nibs to reject series A coils. Your coils from stock are probably the older series A coils. Order a new series B coil, and it will fit.


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