ITEM NAME:2Pc 12V DC 20A 30A AMP Car Audio Inline Circuit Breaker Fuse Holder Inverter Description: Easy to use and durable. Function: prevent excessive current, protect the electrical appliance. Apply in connecting audio power line. Use in place of an inline fuse holder. Suitable for car audio/video system overload protection. Specification: Manual open circuit push button. Self-Testing & Manual Override. Easy to operate with manual reset arm. No fuse change trouble. Can be mounted on panel or firewall. Ampere range: 20A and 30A Size: Approx. 100x 40x 40mm/ 3.94x 1.57x 1.57inch Package Includes: 2 Pieces Circuit Breaker (1Pcs each size) Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement..Ampere range: 20A and 30A. Use in place of an inline fuse holder. 2 Pieces Circuit Breaker (1Pcs each size). No fuse change trouble. Manual open circuit push button. Can be mounted on panel or firewall.