SIMATIC S7-400 Long-Format 4 MB Flash Memory Card
The Siemens 6ES7952-1KM00-0AA0 is a long-format SIMATIC S7 memory card for compatible S7-400 controllers. Siemens specifies 5 V Flash EPROM technology and a memory capacity of 4 Mbytes for nonvolatile program and project storage.
| Official lifecycle wording | PM300: Active Product |
| Procurement note | Confirm current availability, exact article number, firmware or project requirements and supplied accessories before ordering. |
| Manufacturer | Siemens |
| Complete article number | 6ES7952-1KM00-0AA0 |
| Product designation | SIMATIC S7 memory card |
| Product type | Flash EPROM memory card |
| Controller platform | SIMATIC S7-400 |
| Mechanical format | Long design |
| Memory technology | Flash EPROM |
| Memory capacity | 4 Mbytes |
| Operating voltage | 5 V |
| Packaging dimensions | 9.30 × 13.40 × 1.50 cm |
| Net weight | 0.043 kg |



Provides nonvolatile storage for compatible SIMATIC S7-400 controller programs.
Supports exact-capacity replacement planning for installed long-format memory cards.
Helps retain controller project data when used with the correct supported S7-400 CPU.
Verify the complete 6ES7952-1KM00-0AA0 MLFB, S7-400 CPU type, supported memory-card format, required capacity, project size, firmware and maintenance procedure before installation.
Request nameplate, connector or terminal-area and installed-system photographs. Confirm quantity, condition, accessories, documentation, inspection requirements, warranty terms and destination.
Siemens Industry Mall lists 6ES7952-1KM00-0AA0 as PM300: Active Product. Continue checking the complete article number when confirming availability and controller compatibility.
It is a Siemens SIMATIC S7 memory card for compatible S7-400 controllers.
Siemens specifies 4 Mbytes.
The card uses 5 V Flash EPROM technology.
Siemens describes it as a long-format memory card.
No. Confirm the exact CPU, card format, capacity and project requirements.
Siemens Industry Mall lists PM300: Active Product.
Send the full order code, quantity, destination, S7-400 CPU and required project capacity for availability and compatibility review.
Technical identification, S7-400 CPU and memory compatibility review, sourcing coordination, inspection planning and global delivery support for controller-storage projects.



We compare the complete 6ES7952-1KM00-0AA0 article number, long-format design, 4 Mbyte capacity, Flash EPROM technology and the S7-400 CPU information supplied with the inquiry.
This helps prevent confusion with a different memory size, short-format card or incompatible CPU generation. Project size, firmware, backup procedure and installed card evidence are reviewed when available.
Before dispatch, the agreed evidence can cover the nameplate, enclosure, plug-in area, contacts, LED label area and included accessories. Visible damage, contamination, storage condition and packaging needs can be added to the inspection scope.
The commercial review also aligns requested condition, quantity, lead time, warranty terms, supporting documents and destination-specific shipment requirements.
The full order code, system role and application requirements are reviewed as one configuration rather than as isolated keywords.
Procurement, engineering and maintenance teams receive a shared checklist covering hardware, project and commercial evidence.
Packing, documentation, transport preference and delivery destination are aligned early to support the maintenance schedule.
| Stage | Order support |
| 1. Inquiry | Send 6ES7952-1KM00-0AA0, quantity, destination and available installed-system or nameplate evidence. |
| 2. Compatibility review | We compare S7-400 CPU, supported card format, required memory capacity, project size, firmware and maintenance procedure. |
| 3. Commercial alignment | Availability, condition, lead time, inspection evidence, warranty and delivery expectations are confirmed. |
| 4. Packing and dispatch | Protective packing and shipment documentation are coordinated for the destination and selected transport method. |
Share the exact quantity, installed-system configuration, application details and destination for an availability and compatibility review.
A 70-model cross-brand reference list for automation, networking, safety, drives, instrumentation and maintenance procurement. Confirm every complete order code before purchase.
| 70 Model References | |||
| 6GK5208-0BA00-2FC2 | 330104-02-09-10-01-00 | PRO3000 | EM100 - 823-865 |
| 0243002430 4.300-2420 | E175096 | REG-K 12X230/16 | 140471-01 3500/70 |
| AB444230035 | 15B10851G1 | KJ2003X1-BA2 /12P2093X102 | R6010 |
| SD55X | BM11D | DSX-PLA004 | ABB M2301 2TMA070080W0012 |
| GT437-491 | CK721-A | PR 4501 | BMP21 |
| EB0518(A) FXYMP-M 1677287 | 5642-50 | PSM700 | 24138990 |
| 60950-50 | ACHILLES-NGFW-300-2-R3B | LM4-LC24J-2A2UN | WV-S1112 |
| F9342DT-01 | 2182-227 | 233.52.100 | 15B10840G1 / 15H50541 |
| Nrk16/A | IEM-3000-8TM | ABB DC505-FBP 1SAP220000R0001 | 1SVR450055R0000 |
| 14YB3-230/C 29317AA8 | D504 | ATM-20 | GVAG-2VK1S |
| sms1600 pn sg001043 | 407860 | OC485 | B4-24-T-5-30 |
| PRO32IN 10290-0000-F REV-C | ABB PM582 / 1SAP140200R0100 | EDB14030 | MP80 |
| 102MC-SC | 02-70325-02 | 1860114A | TSW-552-BS |
| K9149FF-05 AS KG149FA | BOB1024 | 9418/01-201-10 | ABB 61318968 NDPC-02 |
| Eurotherm 2404 | RKLB57 6180BKR000000-H1111 | KNX /644692 | AVPR100S151213 |
| SDVN-2S | LBB4540/04 F01U508294 HW04/02 WK:2017 | EFCB12T-OE1 | O5H700 |
| GTD-2000Tx | ULFIM-D37M-45-XOR | 1606-XLE240EN | WTD-868-T |
| H2O | MA2-08E | ||
Send the exact order code, quantity and destination for availability, configuration and compatibility review.