This heavy-duty countertop battery switch features a removable red key that allows you to quickly disconnect power and prevent unauthorized use of your boat’s electrical system. Designed for surface mounting, it offers cable entry from all four sides, making it easy to install in tight spaces or on any flat surface. The switch is built to handle up to 1000A at 50V DC for 30 seconds and 300A continuous load at 12/24V, ensuring reliable performance during engine start-up and normal operation. Its intermittent rating of 500A adds a safety margin for short bursts of higher current draw. A waterproof cap (when the key is removed) and corrosion-resistant internal components provide marine-grade durability against moisture and salt, complying with CE and ISO 28846 standards for ignition protection and safety. Use this switch to isolate your battery when your boat is not in use or during maintenance, thereby preventing battery drain and enhancing safety on board. The removable key adds an extra layer of theft deterrence and can be taken out when the power is off, immobilizing the electrical system. Overall, this Osculati battery switch with removable key is a versatile, high-capacity battery isolator that combines security and performance for any marine electrical setup.