Pluggable Terminal Blocks CUI Devices Pluggable Terminal Block connectors offer various orientations, pitches, and housing styles. These blocks feature 2 to 24 pole counts, pitches ranging from 3.5mm to 7.62mm, and 500MΩ insulation. The mounting-angle orientation options include horizontal, vertical, and 180°. These CUI Devices pluggable terminal blocks are both UL and CE safety certified and operate within a -40°C to +130°C temperature range.