UJ series spring cage clamp terminal blocks is patent products, passed type-test items by National Inspection Center for Electric Control ａｎｄ Connector Institute of Aerospace Industry Head Office, ａｎｄ achieved model certificate issued by Tianjin Design & Research Institute of Electric Drive, the No. is F0172#. UJ series products can be operated by a suitable screwdriver, quick ａｎｄ simple connection. Plug screwdriver into operation hole till to current bar, then ｉｎｓｅｒｔ conductor to connection hole, then draw out screwdriver, thus spring clamping structure can conenction conductor reliable. UJ series blocks are broadly used in aviation, energy sources, electrical, railway, telecommunication, machine tool ａｎｄ equipments ａｎｄ so on fields to connction conductors, ａｎｄ enjoyed by users.