Double-deck terminal block, 870 Series, gray This double-deck terminal block (item number 870-131) simplifies electrical installations. Strip lengths must be between 6 and 7 mm when connecting conductors to this double-deck 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 double-deck terminal block also functions as a through terminal block. This product features conductor terminals and utilizes CAGE CLAMP®. Our CAGE CLAMP® connection provides a safe and maintenance-free way to connect all types of conductors. You do not need to prepare the conductor in any way, such as crimping ferrules. Depending on the conductor type, this double-deck terminal block is designed for conductor cross sections ranging from 0.08 mm² to 2.5 mm². An operating tool is used to operate this pluggable rail-mount terminal block.