I have replaced the fan motor on my AC unit and everyone has been advised to replace the contactor at the same time. I had a contractor (who only switched one 240v branch) but I did a little research and found that most AC contractors running their own business only have two branch contactors to save space on their truck save up. Some manufacturers claim this is some sort of leakage current flowing through a branch to keep the motor slightly warm. At least on my model this is not possible as there is no neutral wire to return this leakage current. Switching one leg is electrically the same as switching both, unless the current returns through ground (which the code doesn't allow in almost all cases). My AC unit doesn't even have a ground connection. If a ground connection is present, it must be "grounded" through the metal brackets that hold the AC unit in the concrete wall. My device has been running for a few days and had no problems with the contactor. The holes coincided with the old one, it was only necessary to unscrew the old one and connect the new one by pulling the main disconnect switch.
Adjustable AC Current Sensing Switch: SZC23 No AL-CH Model, 0.2A-30A Range
14 Review
MIDI keyboard Axelvox KEY49j white
22 Review
5Pcs 19Mm 12V 24V Waterproof Latching Push Button Switch With Wiring Harness And LED Indicator Light, Pre-Wired SPDT Self-Locking 4 Pin Marine Metal Switch For Boats Cars Trucks (Blue)
22 Review
TWTADE/AC 24V 10A Coil Electromagnetic Power Relay 8 Pins 2DPT 2NO+2NC With Indicator Light And Socket Base -YJ2N-LY
9 Review