Through terminal block, 283 Series, CAGE CLAMP® Our through terminal block (item number 283-672) makes connecting wires quick and easy. Strip lengths must be between 16 and 17 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 celebrated universal connection known as CAGE CLAMP® is the industry standard for connection technology and electrical interconnections. Depending on the type of conductor, this through terminal block is ideal for conductor cross sections ranging from 0.2 mm² to 16 mm². This through rail-mount terminal block is operated with an operating tool.