Multilevel installation terminal block, 2003 Series, Push-in CAGE CLAMP® Our multilevel installation terminal block (item number 2003-6660/2003-6693) simplifies electrical installations. Conductors should only be connected to this multilevel installation terminal block if their strip length is between 10 and 12 mm . Featuring conductor terminals along with Push-in CAGE CLAMP®, this product outperforms the competition. Push-in CAGE CLAMP® technology provides a universal connection solution for any type of conductor. It allows both solid and fine-stranded conductors with ferrules to be inserted directly into the clamping point without the need for tools. This multilevel installation terminal block is suitable for conductor cross sections ranging from 0.25 mm² to 4 mm².