The 0171 series terminal block, part of the push-in-design (PID) family, allows users to connect a solid wire faster than with a screw connection. An LED at each connection point is on when current is flowing through the wire. With LED light pipes integral to the terminal block assemblies, they ensure each LED is clearly visible. This indicator provides quick visual confirmation of active connections and is useful for troubleshooting. The ultra-thin housing thickness of 10 mm can accommodate two rows of 1.5-mm² wire entry. The housing thickness of 12 mm can accommodate two rows of 2.5-mm² I/O wire entry.