FIELD: electrical engineering.
SUBSTANCE: invention relates to a decoupler device (1) intended for breaking DC between a DC source (2) and an electric device (3), in particular - between a photogalvanic generator and an inverter with a current-conductive mechanical switching contact (7a, 7b) and semiconductor electronic means (8) placed in parallel to the switching contact (7a, 7b). When the switching contact (7a, 7b) is closed, the electronic means (8) discontinue current supply, with the control input (15) of the semiconductor electronic means (8) connected to the switching contact (7a, 7b) so that when the switching contact (7a, 7b) is opened, the electric arc voltage (Ulb) generated on the switching contact (7a, 7b) as a result of electric arc (LB) connects the semiconductor electronic (8) in an electrically conductive way.
EFFECT: electric arc usage for semiconductor electronic means work which excludes he necessity to continuously use an external energy source.
7 cl, 3 dwg
