Through terminal block, 279 Series, CAGE CLAMP® This through terminal block (item number 279-101) is designed for easy and secure connections. Ensure that the strip lengths are between 8 and 9 mm when connecting conductors to this through terminal block. Whether for industrial or building applications, you can use our through terminal blocks to connect electrical conductors quickly and safely. We offer variants for both classic through-wiring and potential distribution. This product features conductor terminals and utilizes CAGE CLAMP®. Our renowned universal connection known as CAGE CLAMP® is the industry standard for connection technology and electrical interconnections. The dimensions are (4 x 42.5 x 35) mm (width x height x depth). This through terminal block is suitable for conductor cross sections ranging from 0.08 mm² to 1.5 mm². This through rail-mount terminal block is operated with an operating tool.