DC power supply connector and DC power source device

A DC power source device at least comprising:

• a DC power source configured to supply DC power;
• and
• a positive-electrode-side electrode and a negative-electrode-side electrode configured to supply the DC power from the DC power source,
• wherein provided on at least any of a positive-electrode-side electrode side and a negative-electrode-side electrode side are
• a movable contact piece configured to touch a first contact in a state where a terminal on a power receiving side in which a DC current flows at supply of the DC power is inserted and configured to touch a second contact in a state where the terminal is not inserted, and
• a current limiting circuit configured to include a switching element and configured to decrease the current flowing in the terminal through the movable contact piece when the terminal is removed, and
• the current limiting circuit does not flow a current to the switching element in a case where the movable contact piece is touching the first contact, and flows a current to the terminal through the movable contact piece until the movable contact piece is separated from the first contact and linked to the second contact, and gradually decreases the flowing current.