Through terminal block, 285 Series, CAGE CLAMP® This through terminal block (item number 285-635) streamlines wire connections, making them both quick and easy. Conductors should only be connected to this through terminal block if their strip length is 23 mm . 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 CAGE CLAMP® connection provides a proven and maintenance-free way to connect all types of conductors. You do not need to prepare the conductor in any way, such as crimping ferrules. Depending on the type of conductor, this through terminal block is designed for conductor cross sections ranging from 6 mm² to 35 mm². An operating tool is used to operate this through rail-mount terminal block.