The Hella master battery switch is a practical and reliable isolation solution designed for cars and medium-sized trucks. Supplied with a removable key, it provides a simple way to interrupt circuits, helping to prevent theft, reduce the risk of short circuits, and protect electrical systems during maintenance or storage. Built for straightforward installation, it fits a 24mm diameter mounting hole and uses two 10mm stud terminations. The switch handles a maximum load of 1000A at 12V or 500A at 24V for up to 10 seconds, with a continuous load rating of 150A at 12/24V at ambient temperatures up to 80°C. Durable and dependable.