Feedthrough terminal block, 231 Series, with 5.08 mm pin spacing Easy electrical installations are guaranteed with feedthrough terminal block (item number 231-640/023-000). Ensure that the strip lengths are between 8 and 9 mm when connecting conductors to feedthrough terminal block. This product incorporates one conductor terminal and utilizes CAGE CLAMP®. Our highly-rated 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. The dimensions are (66 x 19 x 19.1) mm (width x height x depth). Depending on the type of conductor, feedthrough terminal block is designed for conductor cross sections ranging from 0.08 mm² to 2.5 mm². Tin is used for coating the contact surfaces. THT is used to assemble the feedthrough terminal block.