Fuses and circuit breakers are able to achieve the same point short circuit protection drop-out fuse, fuse principle is to use the current flowing through a conductor will heat conductor, the conductor melted to the melting point conductors so disconnected circuit protection and electrical lines are not It is burned. It is a cumulative spiral heat fuse, so it can achieve overload. Once burned to be replaced melt melt. To prevent leapfrog blown, expanded scope of the accident, on the lower level (ie supply dry, leg) between line fuses should be a good match. The choice should be so superior (supply mains) fuses melt lower than the rated current (power leg) 1 to 2 large differential. Commonly used tube fuse fuse has R1 series, screw type fuse RLl series, packing enclosed fuses and fuse RT0 series RSO, RS3 series. Xi'an high (Figure), screw type fuse, a fuse by Nanning Xi'an Huayi power plant. Road Zhiyuan, temper forward. Xian Huayi Electric Power Equipment Factory (www.xahy.com) aims to become and you win symbiosis, strategic partners to move forward, the more determined to become a high-voltage circuit breaker of the most influential companies, and you leap together to success!