Perko Compact Medium Duty Main Battery Disconnect Switch The Perko Compact Battery Disconnect Switch helps manage the overall use of electrical power on board. This device allows for a quick and easy way to shut down the entire electrical system in an emergency. During inactivity, the Perko Compact Battery Disconnect Switch will help prevent battery drain. This Disconnect Switch has a bright red polycarbonate housing with a large easy-to-turn black knob. Four removable skirt panels allow for eas