Siemens 6ES5135-3KA31 Simatic S5 21-Slot PLC Rack

Availability: 1 left in stock

The Siemens 6ES5135-3KA31 is a 21-slot central controller subrack engineered for the Simatic S5-135U automation system. This chassis serves as...

SKU: 6ES5135-3KA31

Manufacturer: Siemens
Product No.: 6ES5135-3KA31
Product Type: PLC Rack
Product Origin: Germany
Payment:T/T, Western Union
Weight: 10400g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

The Siemens 6ES5135-3KA31 is a 21-slot central controller subrack engineered for the Simatic S5-135U automation system. This chassis serves as the primary structural and electrical backbone for high-density S5-135U configurations, facilitating high-speed communication and power distribution between multiple CPUs, I/O modules, and memory cards. Designed for deployment in demanding environments such as heavy manufacturing, steel mills, and power generation facilities, this rack provides the mechanical stability and electrical integrity required for complex, multi-processor control architectures.

Features

High-Capacity Architecture: Provides 21 physical slots for extensive system expansion and modular I/O integration.
Robust Backplane: Features a multi-layer bus design with high-conductivity gold-plated connectors to reduce contact resistance and prevent long-term signal degradation.
Industrial Reliability: Built to withstand the mechanical stresses and vibration profiles typical of large-scale industrial control cabinets.
Signal Integrity: Integrated shielding and trace routing minimize electromagnetic interference, ensuring stable communication between processors and peripheral modules.
Power Distribution: Optimized for a 5 VDC logic supply (18 A capacity) and auxiliary 24 VDC rails to support diverse module requirements.

Applications

This subrack is specifically intended for use within the Siemens Simatic S5-135U product ecosystem. It is an essential component for maintaining legacy automation systems where high-density I/O and multi-CPU processing are required. It is frequently utilized in retrofitting or repairing existing S5-135U control panels to extend the operational lifespan of legacy production lines.

Technical Specifications

Model	6ES5135-3KA31
System	Simatic S5-135U
Slot Count	21 Slots
Logic Bus Supply	5 VDC (18 A max)
Auxiliary Supply	24 VDC
Operating Temp	0 to 55 deg C
Storage Temp	-40 to 70 deg C

Installation Guidelines

Mounting: Designed for standard 19-inch industrial rack mounting. Ensure the mounting surface is rigid and capable of supporting the chassis weight.
Power Handling: Ensure the power supply unit is correctly seated before energizing the backplane. Always disconnect primary power before inserting or removing any modules from the rack.
Grounding: Maintain a low-impedance connection to the cabinet chassis ground to ensure effective noise suppression and electrical safety.
Environment: Maintain adequate airflow around the chassis to prevent thermal accumulation. Avoid installing near high-power frequency drives or other significant EMI sources.
Handling: Use ESD-safe practices when handling the backplane or inserting modules to prevent damage to sensitive electronic components.

FAQ

Is the power supply included with this rack? No, the 6ES5135-3KA31 is the subrack chassis only. It requires a compatible slide-in power supply unit to be installed separately.

Can this be used for other S5 series systems? This rack is specifically designed for the S5-135U central controller system. Please verify your system compatibility before installation.

Is this part still in production? No, this component was discontinued by the manufacturer in 1993. We provide these as reliable, field-tested components for legacy system maintenance.

What's clients say about us

Excellent Emergency Support!

Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.

Mark Thompson

Maintenance Manager, USA

Reliable Source for New Spares

Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.

Robert Hoffmann

Engineering Lead, Germany

Top-tier Service and Quality

We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.