Siemens 6ES7408-1TB00-0XA0 Fan Module

Siemens 6ES7408-1TB00-0XA0 is a fan subassembly for SIMATIC S7-400 systems, engineered to drop into an 18-slot rack and provide essential cooling for the backplane and installed modules. This 120/230 V AC fan module serves as a direct replacement for the S7-400 fan subassemblies in the same family, including 6ES7 408-1TA00-0XA0, 6ES7 408-1TA01-0XA0, and 6ES7 408-1TB00-0XA0. Siemens' official module data and Industry Mall listings confirm the 18-slot rack compatibility and 120/230 VAC operation, underscoring its role as a maintenance spare part for existing S7-400 installations. Common applications include automation control cabinets that rely on S7-400 backplanes in manufacturing environments where reliable airflow is essential to prevent overheating of backplane devices. As a genuine Siemens spare part, it is intended for repair or refurbishment of legacy S7-400 systems and should be matched to the exact rack capacity (18 slots) and supply voltage of the original fan module.