Through terminal block, 280 Series, gray Connecting conductors is quick and easy with this through terminal block (item number 280-833). Conductors can only be connected to this through terminal block if their strip length is between 8 and 9 mm . 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. Featuring conductor terminals along with CAGE CLAMP®, this connector is highly versatile. Our highly-rated and maintenance-free CAGE CLAMP® connection makes it easy to connect all conductor types without having to prepare the conductor. For example, you don't need to crimp ferrules. This through terminal block is suitable for conductor cross sections ranging from 0.08 mm² to 2.5 mm². This through rail-mount terminal block is operated with an operating tool.