A facing surface (52) of a refrigerant jacket (40) has: a contact section (520) that comes in contact with a device main body (200); a first recessed section (521) that faces a first lead section (201) and secures an insulating distance from the first lead section (201) by being positioned further away from the power device (20) than the contact section (520); and a second recessed section (522) that faces a second lead section (202) and secures an insulating distance from the second lead section (202) by being positioned further away from the power device (20) than the contact section (520).
