Fuse common types: 1, 2 plug-in fuse, screw type fuse 3, closed fuse 4, 5 quick fuse, resettable fuse melt rated according to the following methods: 1, to protect non-starter When the load process as smooth lighting circuits, resistors, electric and other high-voltage fuse Cangzhou melt slightly larger than or equal to the rated current of the load circuit current rating. 2, a single long-term protection of the motor current can melt fuse maximum starting current selection, the following formula can be selected: IRN ≥ (1.5 ~ 2.5) IN where IRN-- melt rated current; IN-- motor rated current. If the motor frequent starting, where appropriate coefficient can be increased to 3 to 3.5, in particular should be based on the actual situation. 3, protecting multiple motors (supply mains) IRN ≥ permanent jobs (1.5 ~ 2.5) IN max + ΣININ max- largest capacity single motor rated current. ΣIN remaining motor rated current. Baoding high-voltage fuse _ Huayi Electric Power (certified) _ fuses provided by Xian Huayi power plant. Xian Huayi power plant (www.xahy.com) is a leader in Xi'an, high voltage circuit breakers, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Huayi power in leadership with the staff warmly welcome all inquiries negotiations to create electricity Huayi a better future.