OEX Battery Master / Isolation Switch On/Off SPST (Contacts Rated 275A @ 12V)- $125.00 Product Features 12V 275 Amp Function: On – Off – SPST 2 x 10mm stud terminals Corrosion resistant black plastic housing Key is removable by rotating 45° counter clockwise however it is unable to be removed in either the on or off position Built-in self cleaning sliding contact Removable rear cover and side panels Switch can be surface mounted or recessed into a panel, recessed mount requires 52mm hole Dimensions: 68mm x 74mm