Double potential terminal block, 279 Series, gray Our double potential terminal block (item number 279-626) ensures effortless electrical installations. Strip lengths must be between 8 and 9 mm when connecting conductors to this double potential terminal block. WAGO's double potential terminal blocks feature two independent potential current bars on one level to save space. Each side of the terminal block can be used to separately through-wire one potential. This product features conductor terminals and utilizes CAGE CLAMP®. Our renowned universal connection known as CAGE CLAMP® leads the way when it comes to connection technology and electrical interconnections. The item's dimensions are (4 x 68 x 31.5) mm (width x height x depth). Depending on the conductor type, this double potential terminal block is ideal for conductor cross sections ranging from 0.08 mm² to 1.5 mm². This through rail-mount terminal block is operated with an operating tool.