Siemens 6ES7952-1AM00-0AA0 Programmable Logic Controller Module

The Siemens 6ES7952-1AM00-0AA0 RAM memory card for SIMATIC S7-400 controllers adds 4 MB of RAM in a long-form module, delivering an immediate capacity boost for runtime data and controller variables. Built specifically for the S7-400 family, this RAM memory card occupies the long-design slot form factor used by Siemens’ classic SIMATIC memory expansions and weighs about 55 g, making it a compact addition to the PLC rack without imposing undue bulk. As part of the SIMATIC S7 memory expansion lineup, it integrates with compatible S7-400 CPUs to extend available RAM, helping support larger programs and more complex data handling within industrial automation projects. The 4 MB RAM capacity is a fixed resource of the card, enabling developers to allocate additional memory for live data, buffers, and temporary storage during PLC operation. This memory card is a dedicated accessory within the Siemens S7 ecosystem, suitable for retrofit or upgrade scenarios where existing RAM constraints limit the performance or capacity of the control system. For engineers and maintenance technicians working with SIMATIC S7-400 systems, the 6ES7952-1AM00-0AA0 provides a straightforward memory expansion option that remains compatible with standard S7-400 configurations and installation practices.