矿物绝缘电缆（Mineral Insulated Cable）简称MI电缆，作为配线使用时，国内习惯称作矿物质电缆或防火电缆。矿物绝缘电缆由铜导体、矿物质绝缘、铜或其他金属护套等无机材料组成。
Mineral insulated cable is called Mi cable for short. When it is used as wiring, it is commonly called mineral cable or fire-proof cable in China. Mineral insulated cable is composed of copper conductor, mineral insulation, copper or other metal sheath and other inorganic materials.
1996年连接英法两国的英吉利海峡海底隧道发生严重火灾，安装在隧道内的矿物绝缘电缆系统甚至在钢筋混凝土和焊接钢轨被摧毁以后，依然为疏散乘客提供应急照明，并经受熊熊烈火和高温的严峻考验。由于矿物绝缘电缆有着普通电缆无法可比的质量和假山制作 不锈钢铸件 铝箔真空袋 七孔梅花管 hdpe硅芯管 液压钢坝 PVC软管 飞行激光打标机 沥青保温泵性能，它的使用范围也越来越广泛。
In 1996, a serious fire broke out in the channel tunnel connecting Britain and France. Even after the destruction of reinforced concrete and welded steel rails, the mineral insulated cable system installed in the tunnel still provided emergency lighting for the evacuation of passengers, and withstood the severe test of fierce fire and high temperature. Due to the incomparable quality and performance of ordinary cables, mineral insulated cables are more and more widely used.