Siemens 6ES5741-0AC21 SIMATIC S5 741 Module Holder

6ES5741-0AC21 is the SIMATIC S5 741 module holder listed in Siemens ST 53. It is a mechanical holder with a 22-pin terminal strip with screw connections, not a digital output module; match the installed assembly before ordering.

6ES5741-0AC21 uses a 22-pin terminal strip with screw-terminal connections according to the Siemens 741 ordering table. Check the installed strip and mating arrangement because a different 741 holder variant may have a different terminal count or connection style.

6ES5741-0AC21 is the 741 holder variant without a recess for a heat sink. Compare the existing holder geometry before installation; the Siemens table lists other 741 variants separately, so a similar holder number does not establish a mechanical match.

6ES5741-0AC21 is listed with a 22-pin screw-connection strip and no heat-sink recess, while the 0AB11 entry has a 22-pin double-pin strip and no recess. Siemens specifies the 0AC21 holder for 220 V or 110 V modules, so match the connection style and installed module before ordering.

6ES5741-0AC21 should be checked against the installed SIMATIC S5 holder location, the 22-pin terminal strip, screw-terminal connections and the absence of a heat-sink recess. The catalogue description alone does not confirm fit with every possible module or cabinet arrangement.

6ES5741-0AC21 is a SIMATIC S5 module holder, not an output card. Its Siemens catalogue entry describes the terminal strip and mechanical configuration, not output channels, load voltage or switching current; those ratings must come from the separately selected electronic module.

6ES5741-0AC21 should be ordered by the complete Siemens article number together with the required quantity. Provide a photo of the existing holder and terminal strip, and confirm the 22-pin screw-terminal arrangement and no-recess geometry to avoid selecting a different 741 variant.