铁壳开关结构很简单,主要由刀开关、熔断器和钢板或铸铁制外壳组成。这种开关比较安全可靠,使用寿命长,所以应用非常广泛。但是,铁壳开关如果使用不当,也可能引起火灾。安全使用铁壳开关的措施主要有以下几点。 1.在选用铁壳开关时,应考虑到被控制线路的负荷、电压、电流、工作条件、安装地点和周围环境。易燃易爆场所应使用 Iron shell switch structure is very simple, mainly by the knife switch, fuse and steel or cast iron shell. This switch is more safe and reliable, long service life, so the application is very wide. However, improper use of the metal case switch may also cause a fire. Safe use of the iron shell switch measures are the following points. 1. In the selection of steel shell switch, should take into account the load of the line under control, voltage, current, working conditions, installation site and the surrounding environment. Flammable and explosive places should be used