Heavy-Duty Built-In Marine Battery Switch (Removable Key) – 280A

This heavy-duty battery switch is designed for flush (built-in) installation, providing a clean look and secure fit on your boat’s control panel or battery compartment. It is engineered to control high currents – 280A continuous, with a massive 2500A rating for 5 seconds to handle the surge of engine start. Variants come with different colored covers (white or black) to match your vessel’s aesthetic, but internally they share the same robust components. The switch includes a removable key made of nickel-plated brass, which ensures reliable conductivity and can endure frequent use without corrosion. When the key is removed, a waterproof cover can be closed to protect the keyhole from water and dirt ingress. The body is constructed from black polycarbonate plastic and the backing hardware (nuts, washers) are stainless steel, providing excellent resistance to the marine environment. The device is CE certified and meets ISO 28846 ignition protection, meaning it won’t spark and is safe to install near fuel sources. Installation is done via a circular cutout (~80 mm) with a threaded securing ring on the back (for the built-in model), ensuring a tight seal and low-profile appearance. Heavy-duty M10 (10 mm) terminals are provided for battery cables, and should be connected to the positive lead as per standards. This switch is typically used as a main battery isolator on larger boats: turn the key to disconnect the battery when the boat is not in use or during emergencies, and remove the key for security. Given its high capacity, it’s suitable for diesel engines and twin-engine setups where large starting currents are present. Each package includes the key (and a spare key is usually available under a separate part number). By choosing this heavy-duty built-in battery switch, you ensure maximum reliability and safety in managing your vessel’s high-current electrical system.

Technical data