I sometimes have to replace contactors in a control box that powers single phase AC motors. These control box's come from the USA and can be configured for 100 or 240. Long ago these contactors were open frame Allen & Bradley with two N/O contacts to run the motor and two N/C for the brake.They always came wired with both normally open contacts in series.
I was told then to wire them up in parallel to split the current over both sets of contacts.
I still to this day convert them to parallel and have always wondered why they came in wired in series.
Why would they do this?
Any ideas?
I was told then to wire them up in parallel to split the current over both sets of contacts.
I still to this day convert them to parallel and have always wondered why they came in wired in series.
Why would they do this?
Any ideas?