RT14系列圆筒形帽熔断器适用于额定电压交（jiāo）流380V，额定电流至100A的配电装置中作过载保护和短路保护。

本系列熔断器（qì）由高分断能力圆筒形帽熔断体和熔断器支持（chí）件组成。
熔断体
熔断体的熔体两端焊接在圆筒形（xíng）端帽上，接近熔体的最热部位配置适量易熔（róng）合金，以使熔断（duàn）体有较低的动作温度和耗散功率，使熔断体能适（shì）应过载而（ér）几乎不老化。
熔断器支持件
熔断器支持件是熔断器底座和载熔（róng）件（jiàn）的组合。底座由插座（zuò）、接线端（duān）子和绝缘座等部件组成;载（zǎi）熔件是（shì）用（yòng）来装卸和载运熔断体的熔（róng）断器可动绝缘部件。
熔断器支持件有螺（luó）钉固定和电器安装轨等（děng）安装（zhuāng）形式（shì）。
Series RT14 fuses with cylindrical caps are applicable in distribution units  with rated voltage up of 380V a. c. and rated current up to 100A for overload  and short-circuit protection. The series consists of fuse-links with cylindrical  caps of high rupturing capacity and fuse holders
Fuse-link
The two ends of the fuse-elements are welding connected to the cylindrical  caps. Near the hottest part of the fuse-element a proper amount of low melting  point alloy is applied making the fuse-link having lower action temperature and  power dissipation. Thus the fuse-link may adapt to overload and hardly any aging occurs.
Fuse-holder
The fuse-holder is the assembly of fuse-base and fuse-carrier. The base is the fixed part of the fuse-holder, which is composed of electric contacts parts  coordinated with the fuse-link and connecting terminals. The fuse-carrier is a movable part of the fuse-holder used to load. unload and carry the fuse-link.  Two styles of screw fixing and rail mounting of fuse-holder are available.