Terminal block

A terminal block comprising:

• a housing that includes a busbar holding portion holding a busbar extending in an axial direction, an attachment surface provided to intersect the axial direction so as to abut on an attachment target, and an annular shaped recessed groove provided in an annular shape on the attachment surface on an outer side of the busbar holding portion around the axial direction;
• and
• a seal member that has an annular shape and is provided in the annular shaped recessed groove;
• wherein
• the annular shaped recessed groove includes an inner side wall surface on an inner side of the annular shape, and an outer side wall surface on the outer side of the annular shape,
• the seal member includes an inner side projection provided on the inner side surface in the annular shape in the seal member so as to protrude toward the inner side wall surface and an outer side projection provided on the outer side surface in the annular shape in the seal member so as to protrude toward the outer side wall surface,
• a recessed step portion formed in a recessed shape including a step portion is provided in one of:
• an inner side edge portion, which is one of the inner side edge portion where the attachment surface is connected to the inner side wall surface;
• and an outer side edge portion where the attachment surface is connected to the outer side wall surface, and
• a protrusion height of one of the inner side projection and the outer side projection, corresponding to a side on which the recessed step portion is provided, is formed to be smaller than the protrusion height of an other of the inner side projection and the outer side projection.