T2100122101-000 is a heavy-duty connector insert designed for demanding industrial automation and control applications. This screw terminal insert is part of the HK4/8 series and accommodates 4 to 8 contacts with a maximum rating of 690V/400V and 80A/16A depending on configuration. The insert features a die-cast aluminum housing with powder-coated finish (RAL 7037) and stainless steel locking elements, providing robust corrosion resistance suitable for harsh environmental conditions. With an operating temperature range of -40°C to +125°C and IP65 degree of protection, this connector ensures reliable performance in industrial environments including rolling stock, automation systems, and other demanding applications requiring high current capacity and environmental durability.