T2050962201-007 is an HEEE-048-F heavy-duty connector insert designed for railway rolling stock applications, complying with the EN45545 European standard for flame retardancy. This insert accommodates 48 poles (with capability to extend to 96 poles in modular configurations) and is rated for 16A current at 400V, enabling reliable transmission of signal, data, and power through a single connector. The insert meets R22 and R23 requirements at hazard level HL3, with materials approved for fire, smoke, and toxicity (FST) compliance per EN45545, EN ISO 4589-2, EN ISO 5659-2, and NF X 70-100-1/-2. Operating across a temperature range of -40°C to 125°C, this modular insert provides high flexibility for customized railway connector configurations used in traction converters, power distribution systems, and inter-car jumpers, while reducing installation costs through its time-saving assembly design.