Refrigerant circulation device, cooling device, and pump unit

A refrigerant circulation device comprising:

• a primary flow path through which a primary refrigerant flows;
• a secondary flow path through which a secondary refrigerant flows;
• a heat exchanger connected to the primary flow path and the secondary flow path;
• a housing including two first outer side surfaces extending along a first direction in a plan view and two second outer side surfaces extending along a second direction intersecting the first direction, the housing accommodating the primary flow path, the secondary flow path, and the heat exchanger;
• a power connector provided on the first outer side surface and protruding from the first outer side surface;
• two inflow ports positioned on the first outer side surface provided with the power connector and respectively communicating with the primary flow path and the secondary flow path;
• and
• two outflow ports positioned on the first outer side surface provided with the power connector and respectively communicating with the primary flow path and the secondary flow path;
• wherein
• at least one of the two inflow ports and at least one of the two outflow ports are opposite to each other across the power connector in the first direction in the plan view.