FIELD: electricity.
SUBSTANCE: modular circuit device (10) for switching of electric capacities comprises a relay panel (40) and an adapter (30), connected in a detachable manner with the relay panel (40). The adapter (30) comprises a semiconductor relay (60) and a control device (50) electrically connected to it. Besides, there is a relay (20), which is connected in a detachable manner electrically and mechanically with the adapter (30) so that in the condition after connection the semiconductor relay (60) is connected in parallel to the mechanical switch (22) of the relay (20), besides, the control device (50) may control the relay (20) and the semiconductor relay (60) at different moments of time.
EFFECT: reduced extent of wear of normally open contacts of relay, closed and opened without load.
9 cl 3 dwg
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