Description:Function: Suitable for car audio/video system overload protection, prevent over current, protect electrical appliance. Apply in the audio power connecting line, use instead of built-in fuse holder. Manual circuit opening button, self-testing and manual control, no problems with fuse change. Can be panel or firewall mounted, works with 12v-24v DC. Applications: battery chargers, audio, auto, trucks, buses, marine, RV, trolling motors etc. Specification: Operating voltage: 6V-28V .Operating temperature: -40f-185f (-40c-85c) Product waterproof class: IP66 waterproof Interrupt rating: 2.5ka @ 12Vdc Size: about 45*30*30mm Wiring: golden head (incoming line) AUX head (outgoing) Package includes: 3 pcs Circuit Breaker Reset Fuse Holder with Cover Note: Please allow 0.5-1 inch difference due to manual measurement. (1 inch = 2.54cm) Please check the size and picture carefully before payment. Due to the difference between different monitors, the picture may not reflect the actual item color. Please understand, thank you.