The development and application fields of small fuses

Small fuse Since the 1880s, Edison applied for the first fuse patent equivalent to a safety valve in the circuit, opening the history of fuse development. Fuse applications are becoming more and more widely used, and many designs have been produced. Various industries have different requirements for fuses. This has resulted in different fuse families with different shapes, sizes, installation forms, materials, structures, specifications, characteristics, and applications. Variety. The development of small fuses has experienced four revolutionary milestones. The differences in industry development and environmental conditions in various countries in the world have produced many differences in the use of fuses in different regions. These differences are reflected in the tubular electronic small fuse products, and gradually formed two major systems in North America and Europe. The IEC60127-4 general-purpose module fuse link tries to combine the two systems into one, and it has taken the first step. China's fuse industry started in the 1950s and began to copy everything from the Soviet Union at that time, with few varieties, outdated structures, and backward test methods. In the late 1970s, the localization of color TVs promoted the development of the small-scale fuse industry, and the time-delay fuses for color TVs began to move closer to international standards. China's first national standard for small fuses GB9364. Equivalently adopts the corresponding part of IEC60127. After the revision, GB9364-97 and the recently formulated GB9364.4 are equivalent to adopting the corresponding part of IEC60127, but the 5th and 9th parts of the standard , 10 parts have not been formulated so far.

The main application areas of small fuses

1 In various electrical appliances such as instrumentation, industrial control, test and measurement, and motors.

2 All kinds of household appliances, audio-visual equipment, kitchen and bathroom appliances, and small household appliances.

3 In residential power supply systems, distribution boards, plug switches, and wiring devices.

4 PCs, notebooks, various computer peripherals or peripheral equipment and accessories.

5 In electronic communications, switches, terminals, machine stations and related products.

6 Network equipment, access distribution and network peripheral equipment or accessories.

7 Transportation facilities, vehicles, various vehicles and ships, and in-vehicle electronic and electrical equipment.

8 The financial system includes bank securities equipment, deposit and withdrawal and card swiping devices, etc.

9 Commercial systems include calculators, cash registers and other equipment for various service industries.

10 Entertainment facilities and accessories such as electronic games and electronic toys.

11 Various types of power supplies, converters, chargers and dischargers, etc.

12 Medical equipment, military equipment, and various high-tech equipment.