Siemens | Simatic S5 6ES5775-3AA21

Product Details

• Part Number 1 6ES5775-3AA21

Product Description

Within the Simatic S5 product line, Siemens 6ES5775-3AA21 serves as a Bus Coupler Module.

From a maintenance perspective, this type of component provides an interface transition within the automation system. The exact conversion function is defined by the source and destination equipment named for the application. The documented module assignment should remain the basis for selection.

In a SIMATIC S5 system, module selection is governed by the controller family, rack arrangement, electrical interface, and configured program. The exact article number should be matched before installation. Selection should account for the intended surrounding hardware configuration.

In the signal path, this approach helps preserve the intended system function while keeping selection aligned with the documented ratings, capacity, and compatibility requirements. Existing connection and module records should guide replacement work.

Product Documentation

• Common Part Typos 6ES5775-3AA2I, 6ES5775-3AA2l, 6ES57753AA21, 6ES57753AA2I, 6ES57753AA2l

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