JOES Heavy Duty 4 Terminal Battery Disconnect Switches are designed for cars that run high amp Alternators and need to isolate the Alternator to a separate circuit. This 4 post switch provides two isolated circuits and is rated for two high current loads (125A continuous, 750A intermittent), up to 36VDC Max. Mounting studs are threaded  3/8 -24 and stud hardware is included. Operating temperature range is -40degF to 85degF