Blue Sea Systems BSS Switch Battery HD Series Selector 4 Position With AFD

The Blue Sea Systems 3003 HD Series 4-Position Selector Battery Switch with Alternator Field Disconnect (AFD) is a heavy-duty marine battery switch designed for demanding applications. This switch features a make-before-break contact design, allowing seamless switching between battery banks without power interruption. It includes an AFD to protect alternator diodes if the switch is inadvertently turned to the "OFF" position while the engine is running. The switch is ignition protected, ensuring safe installation aboard gasoline-powered boats. Its corrosion-resistant, tin-plated copper studs accept multiple cables up to 4/0 AWG and are designed for surface or rear panel mounting. With a continuous rating of 500A, intermittent rating of 700A (5 min), and cranking rating of 1600A for 30 seconds, this switch is suitable for large diesel and gasoline engines. It is waterproof to IP66 standards, making it ideal for harsh marine environments. The switch's compact design allows for easy installation and reliable performance in various marine applications.