- BLUE SEA Switch Battery M ON/OFF w/Knob The BLUE SEA Switch Battery M ON/OFF w/Knob is a marine battery switch designed for 12/24 V DC systems, featuring a weight of 0.65 lbs and dimensions of 3 x 4 x 7 inches. This unit enables efficient control of battery power onboard vessels, ensuring reliable operation in marine environments. Compatibility & Applications Mounts easily on the dash of boats up to 30 ft. Wires to 12V and 24V DC electrical systems. Pairs with multiple battery configurations for optimal power management. Replaces standard battery switches in sailboats and motorboats. Integrates with existing wiring for simple installation without modification. Fits in the typical mounting locations of marine electrical panels. Compatible with Blue Sea Systems’ battery management products. Can be used in conjunction with NMEA 2000 systems for enhanced monitoring. The unit provides a reliable means to control battery power, ensuring quick disconnection in emergencies. Its robust design, IP66 rating, and UV-resistant finish make it resistant to water and dust, distinguishing it from standard switches. An example installation includes use on the control panel of a 25-foot sailboat, where it facilitates easy access for power management.



