Circuit Breaker DC 100A: The circuit breaker has a manual reset button switch, which can conveniently control the circuit break, equivalent to the effectiveness of the fuse, effectively protect the car electrical appliances, with over-current protection, over-voltage protection, current residual protection and overcharging protection. 12V-48V DC: 48V voltage circuit breaker can significantly improve the level of the power supply system, 48v dc power supply is a specific voltage level, it is mainly used for higher requirements and smaller power appliances, normal use conditions have higher . But at the same time also need to be based on the specific use of the environment and the characteristics of the equipment to carry out a reasonable configuration and the adoption of protective measures. Circuit breaker black shell is ABS anti-drop material, wiring post is pure copper nickel-plated material, with stronger resistance, and of the combination is better. Comes with 3 stainless steel screws and 2 pure copper terminals block 6AWG*5/16. Circuit breaker is easy to install: You can mount the circuit breaker on the panel or firewall. Widely applications: can to protect electrical equipment and wiring.It can be used in car stereos, RVs, trucks, marine boats , trolling motors, stereo audios, battery chargers, solar systems, DC audio systems, etc. Colour:Black Material:Plastic Package Contents: 1 * Circuit Breaker Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.