Aerospace series - Circuit breakers - Test methods - Part 509: Insertion and extraction forces of signal contact terminals
航空航天系列 - 断路器 - 测试方法 - 第509部分:信号触点端子的插拔力
This standard specifies a method of determining the forces required to insert and extract the contact pin into and out of the terminal socket of the signal contact.
It shall be used together with EN 3841-100.