Fuses (fuse) means that when the current exceeds a predetermined value, the heat generated by itself to the melt blown off an electrical circuit. Fuse is the value for some time, with its self-generated heat so in accordance with the current exceeds the melt melted, so that the circuit is disconnected; using a current protector made of this principle.
Fuse switches are widely used in high and low voltage power distribution and control systems and electrical equipment, as a short-circuit and over-current protection, is one of the most common protection devices. In use, the fuse connected in series with the circuit to be protected, the protected circuit when the current exceeds a predetermined value, and after a certain time, the heat from the melt blown melt self-generated, so that the circuit is opened, thus protecting the effect. As the molten metal conductor and breaking electrical circuits, connected in series with the circuit, overload or short circuit when the current through the melt, the melt itself to heat and fuse, thus the power system, a variety of electrical equipment and household appliances have played a a protective effect. Have anti-delay characteristics, when overload current hour long fuse time; overload current large, fusing time is short. Therefore, within a certain range of the overload current to the current returns to normal, the fuse will not blow, you can continue to use. Fuse switch with anti-delay characteristics, namely overload current hour long fuse time; overload current large, fusing time is short. Fuse switch has a simple structure, easy to use, low cost, etc., are widely used in low-voltage systems.
Technical characteristics of the strip type fuse switch disconnector are mainly single break and double break. strip type fuse switch disconnector it not only has a switch, protection, through the system of other optional features can extend its functionality, it has greater flexibility, you can say it is not simply a switch in the form, the more important is that he is a complete intelligent system. Because there are many fuses to protect irreplaceable advantages in Europe has been widely used, especially in the low-voltage power cables and line protection in these applications. So all kinds of fuse switch disconnectors successfully applied evolving technology and fuse switch combination, because of its small size, safe, affordable, etc. strip type fuse switch disconnectors will be in areas such as grid transformation of the broader field to play a greater role. With the deepening of rural power grids in recent years, the demand for such products will greatly increase, while for Safelight aspects, but also very necessary.
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