WAGO 285-172 is an insulated T-handle assembly tool used to actuate the operating lever on WAGO 285 Series rail-mount high-current terminal blocks up to 95 mm² conductor cross-section. The tool has a 100 mm shaft and a total length of 145.5 mm, giving controlled torque for opening and closing the clamping unit. It is a service accessory for switchboards, distribution boards and industrial junction boxes.