Generac 0D7300/064772/64772 100A 600V 2 Pole W Style Transfer Switch Contactor Assembly. Used in GTS & HTS commercial/industrial transfer switches & others.
Generac replacement parts will also usually fit the following Generac branded generators: Honeywell, Guardian, Siemens, Carrier, Watchdog, Centurion, Eaton & Bryant.
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