The Perko Duty Main Battery Disconnect Switch is designed for reliable performance in marine environments. This medium-sized switch features a key lock for added security, ensuring that your battery can be easily disconnected when not in use. With a durable construction, it can withstand harsh conditions while providing a safe and efficient way to manage your battery power. The switch is easy to install and operate, making it an essential accessory for boat owners looking to enhance safety and prolong battery life. Keep your vessel secure with this dependable disconnect switch!