- BLUE Switch Battery M ON/OFF Locking The BLUE Switch Battery M ON/OFF Locking is a battery switch designed for marine applications, featuring a compact size of 3 x 4 x 7 inches. This switch is utilized for controlling battery connections in marine vessels, ensuring safe operation during maintenance. Compatibility & Applications Mounts to standard panel cutouts for easy installation in marine environments. Pairs with 12V and 24V battery systems in sailboats and motorboats. Replaces existing battery switches from brands like Perko and Blue Sea Systems. Wires to battery terminals for secure connections and disconnections. Fits in battery compartments of vessels ranging from 18 to 30 feet. Integrates with onboard power management systems for streamlined operation. The unit provides a reliable means of disconnecting battery power, enhancing safety during maintenance. Its locking feature prevents accidental activation, making it distinct from generic non-locking switches commonly used in marine applications.



