T2050722101-007 is a HEEE-072-M heavy-duty connector insert designed for railway rolling stock applications and complies with the EN45545 European standard for flame retardancy. This modular insert features 72 poles with a ±PE configuration, rated for 16A continuous current at 400V, and supports signal, data, and power transmission through a single connector interface. The insert is constructed from materials meeting R22 and R23 requirements for hazard level HL3 per EN45545, ensuring fire, smoke, and toxicity (FST) compliance with an operating temperature range from -40°C to 125°C. It is commonly used in railway traction converters, power distribution systems, and inter-car jumper applications where high reliability and safety compliance are essential.