SIMATIC S7-400 RAM memory card 4 MB / 6ES7952-1AM00-0AA0

4 MB RAM memory card explicitly listed in S7-400 CPU ordering tables. Load-memory accessory, not an increase in CPU work memory. Verify exact host compatibility and data-retention requirements before ordering.

Manufacturer part number: 6ES7952-1AM00-0AA0
Brand: Siemens
Category: PLC and HMI
Catalog status: Request a quotation

Technical specifications

Controller family: SIMATIC S7-400
Memory capacity: 4 MB
Memory type: RAM memory card
Application scope: Listed in CPU412/414/416/417 ordering tables; load-memory accessory; not S7-300 MMC and not FEPROM
Document pages: PDF 11, 15, 20, 23
Reviewed document edition: ST 400 / May 2017 / E86060-K4678-A151-A1-7600

Manufacturer technical catalog · ST 400 / May 2017 / E86060-K4678-A151-A1-7600 · en · PDF · ST 400 / May 2017 / E86060-K4678-A151-A1-7600Manufacturer source: Siemens · Model explicitly covered in family document · Covered models: 6ES7952-1AM00-0AA0 · Checked: 2026-10-22Official manufacturer source

This sheet provides a quick technical summary. For design, installation and final selection, review the latest official manufacturer documentation and verify the complete part number.