Through terminal block, 769 Series, gray This through terminal block (item number 769-211) provides hassle-free electrical installations. Ensure that the strip lengths are between 8 and 9 mm when connecting conductors to this through terminal block. Pluggable rail-mount terminal blocks are primarily found in switchgear units and control systems, most notably in railroad technology. These innovative systems combine the properties of rail-mount terminal blocks and connectors for a flexible and reliable wiring system. You also have the option of pre-assembling installations, which not only makes production but also installation, operation, and maintenance more efficient and cost-effective. The through terminal block also serves as a shield termination. This product features conductor terminals and utilizes CAGE CLAMP®. Our renowned universal connection known as CAGE CLAMP® is the industry standard when it comes to connection technology and electrical interconnections. This through terminal block is suitable for conductor cross sections ranging from 0.08 mm² to 4 mm². This pluggable rail-mount terminal block is operated with an operating tool.