Through terminal block, 284 Series, CAGE CLAMP® This through terminal block (item number 284-902) streamlines wire connections, making them both quick and easy. Ensure that the strip lengths are between 12 and 13 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 version, you can use them for either typical through-wiring or potential distribution. Featuring conductor terminals along with CAGE CLAMP®, this connector delivers reliable performance. Our reliable and maintenance-free CAGE CLAMP® connection makes it easy to connect all types of conductors without having to prepare the conductor. For example, you don't need to crimp ferrules. Depending on the type of conductor, this through terminal block is designed for conductor cross sections ranging from 0.2 mm² to 10 mm². An operating tool is used to operate this through rail-mount terminal block.