Feedthrough terminal block, 231 Series, with 5 mm pin spacing Enjoy fault-free electrical installations with feedthrough terminal block (item number 231-611/017-000). Conductors should only be connected to feedthrough terminal block if their strip length is between 8 and 9 mm . Featuring one conductor terminal along with CAGE CLAMP®, this product outperforms the competition. 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 (70.2 x 19 x 19.1) mm (width x height x depth). Feedthrough terminal block is suitable for conductor cross sections ranging from 0.08 mm² to 2.5 mm². The contact surface is coated with tin. THT is used to assemble the feedthrough terminal block.