12 Volt - 60 Amp No fuse change trouble. Easy to use and durable. Brand new ,made with high quality parts. Apply in connecting audio power line. Use in place of an inline fuse holder. Manual open circuit push button. Self-Testing & Manual Override. Easy to operate with manual reset arm . Can be mounted on panel or firewall Size: 98mm (L) x 43mm (W) x 35mm (H) Suitable for car audio/video system overload protection Function: prevent excessive current, protect the electrical appliance.