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6ES7953-8LJ30-0AA0 Siemens
Product Details
Specifications provided for reference. Verify critical details against official manufacturer documentation before installation.
Product Overview
The 6ES7953-8LJ30-0AA0 is a SIMATIC Micro Memory Card (MMC) with 512 kbyte non-volatile Flash-EPROM memory, part of the S7-300/C7/ET 200 automation platform. These MMCs serve as load and firmware storage for S7-300 CPUs and support program retention through power cycles. The 6ES7953-8LJ30-0AA0 enables larger program load capacity and firmware updates compared to lower-capacity variants. It is used in manufacturing automation, process control systems, and compact modular machine control where S7-300 systems are deployed.
Best Suited For
- Storing loading firmware and user programs for S7-300 CPUs
- System upgrades requiring larger MMC capacity
- Redundant memory in compact machine control panels
- On-site replacement in existing S7-300 installations