TE Connectivity/ABB Entrelec part 1SNA176666R0300 is a terminal block jumper or bridge used with ENTRELEC BJMI6 5 and SNA series terminal blocks. These jumpers are designed to provide a quick and easy way to establish electrical connections between adjacent terminal blocks. They are made from high-quality materials and are suitable for a wide range of applications. These terminal block jumpers ensure reliable and secure connections, making them an essential component for any wiring system.