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Spring connection technology is a relative newcomer, but is rapidly growing in market acceptance because of efficiency and performance advantages compared to other connection methods. Like screw clamps, they are suitable for use with solid, stranded, or ferruled wires. However, they are significantly more resistant to vibration than other connections and eliminate the need for periodic tightening of the screws as preventative maintenance. Additionally, spring clamps offer cost savings in the form of lower wiring times and error reduction caused by over or under torquing the retention screw. The tension clamp style was the first of the spring connections to reach the market. To terminate a wire in a tension clamp device, a screwdriver is used to hold open the leaf spring, the wire is inserted, then the screwdriver is removed. Push-in connection technology improves on the tension clamp concept by eliminating the need for a screwdriver. Solid and ferruled wires are simply pushed into the device and held in place by the spring’s clamping force. Stranded wires are inserted by depressing the actuating button and then inserting the wire. Removal for all wire types is accomplished by depressing the actuator button and pulling the wire out. In addition to the obvious cost advantages associated with simply pushing wires into place, the Push-In style provides the smallest footprint of the popular connection technologies.
