Through terminal block, 285 Series, operating tool Connect conductors quickly and securely with this through terminal block (item number 285-691). Ensure that the strip lengths are 23 mm when connecting conductors to this through terminal block. Whether for use in industry or building installations, our rail-mount through terminal blocks make it easy to quickly and securely connect electrical conductors. They’re perfect for either classic through-wiring or distributing potential, depending on the variant. This product features conductor terminals and utilizes CAGE CLAMP®. Our reliable 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. Depending on the conductor type, this through terminal block is ideal for conductor cross sections ranging from 6 mm² to 35 mm². An operating tool is used to operate this through rail-mount terminal block.