Push-in connection system FRK | FSL CONTA-CLIP offers an innovative line of products featuring the Push-in connection system. This system can be used for a large variety of applications with only a minimal number of accessory parts. The pressure-spring TOP mechanism provides safe and quick connections for solid and stranded wires, with or without wire-end ferrules. Our well-designed line of accessories allows you to significantly reduce your installation and storage costs. The FQI pluggable potential distribution system can be used to multiply potential voltages vertically. As with all CONTA-CLIP PE terminals, the FSL terminals also implement a twosided contact with the DIN rail. In all the FSL series, the foot construction and busbar are made of a single piece of copper. This solid, contiguous construction guarantees low contact resistance as well as the high security of the internalspring PE contact foot.