The Narva battery master switch is a compact and reliable isolation solution designed to suit both 12V and 24V systems. Built with a durable plastic body and a removable key, it provides a simple and effective way to disconnect power for safety, theft prevention, or battery protection during maintenance and storage. Rated at 100A continuous load at 12V and 50A at 24V, it is well-suited for light commercial, recreational, and marine applications. Easy to install and operate, this Narva master switch offers dependable performance in a practical and affordable design.