This Switch,On/Off-Lt Spst 125vBlack is a genuine Bunn OEM replacement part. Part number 03357.0003 is used for certain commercial coffee equipment made by BUNN. This part will help repair specific issues you are having with Bunnomatic model SRU, TU3Q, Coffee Brewers. Replace this part if BUNN or a service technician has instructed you to do so. Over time Switches for Bunn SRU, TU3Q, Coffee Brewers may need to be replaced because of normal wear and tear or if damage has occurred to the existing part. When replacing BUNN part #03357.0003 it is suggested that no power or water is connected to the machine and you are working in clean and non hazardous environment. Please be sure Switch,On/Off-Lt Spst 125vBlack fits your specific needs.