12V 24V, On/Off 2 position, Max Withstand Current: 12V 200A. Recommended to mount on the NEGATIVE battery terminal. PROTECTIVE COVER: The battery main cut-off switch comes with a waterproof protective cap, which can better protect dust and water entering the key hole. NO MORE BATTERY DRAIN: Battery cut-off isolator switches help isolate and secure the electrical system, eliminate any power draw from the battery when the vehicle or boat is not in use, safely disconnect the battery. 2 * PORTABLE KEYS: The key can be removed when there is no electrical connection. PACKAGE INCLUDES: 1 x Battery Disconnect Switch, 2 x Keys, 1 x Waterproof Cover. Size: 2 brass terminals: 5/16".