Siemens 6ES5951-7ND51

The Siemens SIMATIC S5 PS951 is a power supply for S5-115U/H automation systems, supplied as a spare part for service and maintenance applications. It provides DC input and outputs for the control system, supporting stable operation in established SIMATIC S5 installations.

This unit is specified as without backup battery and is intended for technical users who maintain legacy Siemens automation equipment. The product lifecycle is marked End, and Siemens indicates that it is cancelled without a replacement product. It is also identified as a design-to-customer product class item, which should be considered during engineering and spare parts planning.

For compliance and procurement review, the article is listed as not RoHS-compliant and has no WEEE take-back obligation noted. It is suitable where existing installed bases require a direct replacement power supply with the same functional role in the system architecture.