Apr 30, 2021
What kinds of fuses are there?
A fuse is also called a current fuse, and the IEC127 standard defines it as a "fuse-link". It is mainly used for overload protection. If the fuse is properly placed in the circuit, the fuse will fuse and cut off the current when the current rises to a certain height and heat abnormally, which protects the safe operation of the circuit. Let's take a look at what kinds of fuses are there?
1. According to the form of protection: overcurrent protection and overheating protection. The fuse used for over-current protection is the usual fuse (also called current-limiting fuse). The fuse used for overheating protection is generally called "thermal fuse".
2. According to the scope of use: power fuses, machine tool fuses, electrical instrument fuses (electronic fuses), automobile fuses.
3. By volume: large, medium, small and micro.
4. According to rated voltage: high voltage fuse, low voltage fuse and safety voltage fuse.
5 According to the breaking capacity: high and low breaking capacity fuses.
6. According to the shape: flat-head tubular fuses (also can be divided into internal welding fuses and external welding fuses), pointed tubular fuses, guillotine fuses, spiral fuses, blade fuses, flat fuses, wrap-around fuses, stickers Chip fuse.
7. According to the fusing speed: very slow fuse (usually indicated by TT), slow fuse (usually indicated by T), medium-speed fuse (usually indicated by M), fast fuse (usually indicated by F), very fast fuse ( Generally expressed by FF).
8. According to the standard: European standard fuse, American standard fuse, Japanese standard fuse.
9. By type: current fuse (chip fuse, miniature fuse, blade fuse, tubular fuse), thermal fuse (RH[square type], RP[resistance type], RY[metal shell]), resettable fuse (plug-in , Lamination, patch).
10. According to the size, it can be divided into: patch type 0603, 0805, 1206, 1210, 1812, 2016, 2920; non patch type Φ2.4×7, Φ3×7, Φ3.6×10, Φ4.5×15 , Φ5.0×20, Φ5.16×20, Φ6×25, Φ6×30, Φ6×32, Φ8.5×8, Φ8.5×8×4, Φ10×38, Φ14×51.
