Spring terminal blocks use spring to replace screws as a fastener, connect the wire through spring and conductive parts. It is different from the series of screw connection, abandoned the screw, can be accessed wire directly.It can improve the efficiency and effectively prevent the electrical machinery vibration caused by the screw loose. It is usually in rail transit, elevator, electric control, security lighting, etc. 

    Spring terminal connection mode can be divided into disc spring  and cage spring connection. 

    Disc spring can directly insert the wire terminals, without tools. Cage spring will form a cage space, needed a screwdriver tools such as the upper part of the spring, spring and shape between the conductive into the square space, then wire access.

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