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switches and relays, except very high accuracy capacitance and loss measurement bridges and high frequency radio frequency switches and relays in monitoring and control instruments with a maximum mercury content of 20 mg per bridge, switch or relay.
sklopke i releji, osim mostova za vrlo precizno mjerenje električnog kapaciteta i gubitaka te visokofrekventnih rf sklopki i releja u instrumentima za praćenje i kontrolu, čiji je sadržaj žive manji od 20 mg po mostu, sklopci ili releju.