A refrigeration apparatus having a refrigerant circuit, comprising: a power device; a printed wiring board on which the power device is mounted; a refrigerant pipe through which a refrigerant of the refrigerant circuit flows; and a refrigerant jacket which has a facing surface that is in contact with the power device and faces the printed wiring board, the refrigerant jacket cooling the power device by refrigerant flowing in a cooling portion, which is a portion of the refrigerant pipe, wherein the power device includes: a device main body; a first lead section which extends towards the printed wiring board from one side of the device main body and which is connected to the printed wiring board; and a second lead section which extends towards the printed wiring board from the other side of the device main body and which is connected to the printed wiring board; and characterized in that the facing surface of the refrigerant jacket includes: a contact portion which contacts the device main body; a first recessed portion which faces the first lead section and secures an insulation distance to the first lead section due to being positioned further away from the power device than the contact portion; and a second recessed portion which faces the second lead section and secures an insulation distance to the second lead section due to being positioned further away from the power device than the contact portion, an end section on the contact portion side of the first recessed portion is an inclined surface that slopes away from the contact portion, in a direction away from the first lead section; and an end section on the contact portion side of the second recessed portion is an inclined surface that slopes away from the contact portion, in a direction away from the second lead section. a power device; a printed wiring board on which the power device is mounted; a refrigerant pipe through which a refrigerant of the refrigerant circuit flows; and a refrigerant jacket which has a facing surface that is in contact with the power device and faces the printed wiring board, the refrigerant jacket cooling the power device by refrigerant flowing in a cooling portion, which is a portion of the refrigerant pipe, a device main body; a first lead section which extends towards the printed wiring board from one side of the device main body and which is connected to the printed wiring board; and a second lead section which extends towards the printed wiring board from the other side of the device main body and which is connected to the printed wiring board; and a contact portion which contacts the device main body; a first recessed portion which faces the first lead section and secures an insulation distance to the first lead section due to being positioned further away from the power device than the contact portion; and a second recessed portion which faces the second lead section and secures an insulation distance to the second lead section due to being positioned further away from the power device than the contact portion, an end section on the contact portion side of the first recessed portion is an inclined surface that slopes away from the contact portion, in a direction away from the first lead section; and an end section on the contact portion side of the second recessed portion is an inclined surface that slopes away from the contact portion, in a direction away from the second lead section.