A connector 1 comprising: a housing 10 that has a primary resin 30 formed by primary molding and a secondary resin 40 formed by secondary molding; and a bus bar group 20 embedded in the secondary resin 40 in a state in which a plurality of bus bars 21, 22, 23 formed integrally with the primary resin 30 are overlapped, wherein the primary resin 30 comprises: outer layer parts CL disposed in a state of contact with outer-side surfaces 20F, 20B in the overlapping direction of the bus bar group 20 and exposed from the secondary resin 40; and middle layer parts ML sandwiched by two adjacent bus bars 21, 22, 23 in a state of contact with the two adjacent bus bars 21, 22, 23.