Ground terminal block, 279 Series, green-yellow This ground terminal block (item number 279-837/999-950) is designed for simple and secure connections. Strip lengths must be between 8 and 9 mm when connecting conductors to this ground terminal block. WAGO's ground terminal blocks allow you to connect electrical conductors directly to the mounting rail thanks to an integrated contact foot. This connection ensures both electrical and mechanical stability between the conductors and the mounting adapter. This product incorporates conductor terminals and utilizes CAGE CLAMP®. Our reliable 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 item's dimensions are (4 x 73 x 31.5) mm (width x height x depth). Depending on the type of conductor, this ground 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.