JL5系列圆形电连接器的接触件为切口收槽及斜线切割两种形式，为保证触件的可靠性，插孔的外层套有自然导向的不锈钢护套，使产品具有接触电阻小，使用寿命长，接触性可靠等优点，产品主要技术指标符合铁道部标准TB/T2716-1996。该系列电连接器插头与插座的连接方式为卡口连接，连接速度快，使用方便，产品被广泛使用于铁路机车中电气及电子设备中的连接。根据用户要求，插头，插座既可装针，也可装孔。

JL5 serles clrcular connectors are made according to ministry of railway standard TB/T2716-1996.the connector’s socket is covered with guided stainless sleeve and allows the connector to have the advantages of low contact reslstance，long endurance，etc.the connection type between the plug and the receptacle is bayonet coupling with quick mating and easy use.this connector is wldely used for the connection of electrical equipment of rail train.the plug or the receptacle may be mounted with both pins and sockets.