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The Siemens Simatic S5 6ES5135-3KA13 serves as the primary backbone frame for the modular Simatic S5-135U automation platform. This industrial-grade chassis provides 21 expansion slots designed to hold power supplies, multi-processor configurations, interface links, and various I/O expansion modules. Designed for demanding industrial environments such as mineral processing plants, large-scale power stations, and petrochemical refineries, this chassis provides the necessary structural and electrical foundation for complex automation tasks. It facilitates high-speed system bus communication between slots, ensuring precise synchronization and reliable signal integrity across the entire rack.
This central controller rack is intended for use in large-scale Simatic S5-135U and S5-155U automation systems. It is suitable for centralized control architectures requiring high-density I/O, multi-processor coordination, and reliable operation in harsh industrial environments.
| Model | 6ES5 135-3KA13 |
| Platform | Simatic S5-135U / S5-155U |
| Slot Capacity | 21 Slots |
| Operating Temperature | 0 to 55 deg C |
| Power Consumption | 60 W (passive backplane load) |
| Bus Architecture | Parallel multi-processor backplane |
Does this rack come with a CPU installed? No, the 6ES5135-3KA13 is the chassis only. It requires the installation of a compatible Simatic S5 central processing unit and power supply module to function.
Can this rack be used for multi-processor configurations? Yes, the backplane is designed to support multi-processor setups, allowing for the integration of secondary coordinator cards and distributed processing tasks.

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All parts are sourced from reputable manufacturers and undergo thorough quality checks.
Extensive stock of industrial automation and discontinued parts, ready for immediate shipment.
Every product — including obsolete items — is covered by a 12-month warranty and 30-day return guarantee.
All product names, trademarks, brands, and logos mentioned on this website are the property of their respective owners.These names and trademarks are used for identification and reference purposes only.We are an independent supplier of industrial automation spare parts.We are not an authorized distributor, dealer, or representative of any manufacturer.Products supplied may include surplus inventory or unused items.We do not claim any affiliation with or endorsement by the original manufacturers.