Abstract: A stator 10 includes a stator insulator support 40 includes an outer annular part 41, an inner annular part 45, a plurality of insulator support teeth 50, and a plurality of insulator support slots 51. The stator insulator support 40 is disposed on the stator core 12 in a way positions of the plurality of insulator support slots 51 correspond to positions of a plurality of slots 15. First protrusions 42 protruding toward an axial direction are provided at the same position as the insulator support teeth 50 in a circumferential direction on the outer annular part 41. In each of the first protrusions 42, a first varnish guide groove 42a extending along the circumferential direction for guiding the varnish to the slot 15, and a first coil support surface 42b vertical to the axial direction for regulating movement of a segment coil 30 in the axial direction are formed.