Blue Sea E-Series Battery Switch 1-Off-2-Both

The Blue Sea E-Series Battery Switch 1-Off-2-Both is a reliable marine electrical control system designed for serious boaters and engine builders who require dependable power management. This switch is ideal for applications such as managing twin engines, auxiliary battery banks, or isolating power during maintenance. Its robust design ensures that it meets the demands of both saltwater and freshwater vessels.

Engineered with a continuous rating of 350 amps, this switch effectively handles the cranking loads of inboard gasoline or diesel engines without experiencing voltage sag or relay chatter. The tin-plated copper studs enhance electrical conductivity and resist corrosion from harsh marine environments. Additionally, the sealed lever mechanism prevents accidental switching, making it suitable for rough sea conditions.

Twin-engine operators and commercial fishing boats will find significant benefits from the 1-Off-2-Both configuration, which allows for individual battery selection, isolation, or simultaneous dual-battery draw. The switch accommodates battery cables up to 4/0 AWG, ensuring efficient power delivery for larger vessels. Its compact design allows for easy integration into tight engine compartments or helm console electrical panels.