Through terminal block, 283 Series, orange This through terminal block (item number 283-902) streamlines wire connections, making them both quick and easy. Strip lengths must be between 16 and 17 mm when connecting conductors to this through terminal block. Whether in industrial or building applications, our rail-mount through terminal blocks are the perfect solution to quickly and securely connect electrical conductors. Depending on the model, you can use them for either typical through-wiring or potential distribution. This product features conductor terminals and utilizes CAGE CLAMP®. Our CAGE CLAMP® connection offers a convenient 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 0.2 mm² to 16 mm². An operating tool is used to operate this through rail-mount terminal block.