Description: Function: suitable for car audio/video system overload protection,prevent excessive current, protect the electrical appliance. Apply in connecting audio power line,Use in place of an inline fuse holder. Manual open circuit push button,Self-Testing & Manual Override,No fuse change trouble. Can be mounted on panel or firewall,works with 12v-24v DC. Applications: Battery chargers, audio, auto, trucks, buses, marine, RV's, trolling motors, etc. Specification: Working voltage: 12V-28V. Working temperature: -40f-185f (-40c-85c) Product waterproofing grade: IP66 waterproof Interrupt rating: 2.5KA @ 12Vdc Size: Approx 33* 21mm Wiring: golden head BAT (incoming line) silver head AUX (outgoing) Package Includes: 1 Piece Circuit Breaker Reset Fuseholder : Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm) Please check the size measurement and the picture carefully before making payment. Dueto the difference between different monitors, the picture may notreflect the actual color of the item. Please understand,Thank you.