To provide a connector that makes groups or blocks of contacts for each circuit.

A plurality of contacts having a terminal portion for connecting with the connecting opposite and a contact portion for connecting with the opposite connector are held in an insulator 28. In its process, a group of contacts 31, 32, 33, 34, 35 are formed in plurality which are collected for each usage of the contact inside one engagement portion 26 for engaging with the opposite connector. By this arrangement, a plurality of contact groups are to be connected with opposite connector in one lot and each contact group is also made capable of connecting with opposite connector respectively.