Blue Sea Systems e-Series Selector Battery Switch with AFD (Model: 9002E-BSS) is a top - notch choice for your boat. It features a 350 - amp continuous rating for inboard gasoline or diesel engines. The tin - plated copper studs offer excellent conductivity and corrosion resistance. It can accept up to 4/0 AWG battery cables and 3/8' (M10) ring terminals. With a 7/8' (22mm) stud length, it can accommodate multiple cable terminals. The one - piece terminal stud design from Blue Sea Systems won't loosen over time. It fits most Perko and Guest low - amperage battery switch hole patterns and can be surface or rear - panel mounted. The tactile indicator helps you feel the knob position. It's waterproof (rated IP66 against powerful water jets) and ignition - protected, safe for gasoline - powered boats. The make - before - break contact design allows seamless switching without power interruption. It also includes an AFD (Alternator Field Disconnect). This switch can isolate or combine battery banks for all loads. Specifications: Selector 4 - Position switch, red in color, 4 switch positions, battery combine option available, with AFD, maximum 32V DC voltage, 140 in - lb (15.82 Nm) terminal stud torque, 350A continuous rating, 600A (5 min) intermittent rating, 1200A per circuit cranking rating for 30 sec, 2 battery inputs, 1.10in (27.94 mm) cable clearance for 4/0 AWG cables, 4/0 AWG (120mm) cable size for ratings, accepts 1/4' (M6) screw for mounting holes, tinned copper stud material, 3/8' - 16 (M10) terminal stud size.
Using the Blue Sea E - Series Battery Switch is easy. First, make sure your boat's power is off. Then, connect the battery cables to the appropriate studs, following the size requirements (up to 4/0 AWG). You can choose to isolate or combine battery banks depending on your needs. Just turn the knob to the desired position, and you can feel the position with the tactile indicator. When installing, you can mount it on the surface or rear panel, making sure to use the 1/4' (M6) screws for the mounting holes. For safety, this switch is ignition - protected, so it's safe to use on gasoline - powered boats. But always double - check before installation. Maintenance is simple. Periodically check the terminal studs to ensure they're tight, as the one - piece design is less likely to loosen, but it's still a good practice. Keep it dry as it's waterproof but excessive moisture can still cause long - term issues. If you're using it for inboard gasoline or diesel engines, stay within the 350 - amp continuous rating to avoid overloading.
