SIEMENS 6ES7400-2JA10-0AA0 Central Rack – SIMATIC S7-400 Series
When a central rack fails in a SIMATIC S7-400 system, the entire control architecture collapses. Every CPU, power supply, interface module, and signal card mounted in that chassis goes offline simultaneously — halting production lines, triggering safety shutdowns, and exposing facilities to unplanned downtime that can cost thousands of dollars per hour. The SIEMENS 6ES7400-2JA10-0AA0 is the structural backbone that prevents this scenario, providing the mechanical housing, backplane bus, and power distribution rail that hold the entire S7-400 system together.
Within the SIMATIC S7-400 product family — Siemens’ flagship high-performance PLC platform for process and manufacturing automation — the 6ES7400-2JA10-0AA0 is the standard 18-slot central rack (UR2). It is engineered to accommodate the full range of S7-400 CPUs, power supply modules, and I/O expansion modules in a single unified chassis. Globally, the S7-400 series is deployed in petrochemical plants, automotive assembly lines, power generation facilities, and large-scale discrete manufacturing, making this rack one of the most widely installed PLC chassis components in heavy industry worldwide.
Technical Specifications
- Part Number: 6ES7400-2JA10-0AA0
- Series: SIMATIC S7-400
- Rack Type: Central Rack (UR2)
- Number of Slots: 18
- Bus System: S7-400 backplane bus (P-bus + K-bus)
- Mounting: DIN rail / panel mounting
- Manufacturer: Siemens AG, Germany
- Product Family: SIMATIC S7-400
- Condition Available: New / Refurbished / Used-tested
Note: All specifications are sourced from official Siemens documentation. Contact us to confirm compatibility with your specific system configuration.
Key Features & Benefits
- 18-Slot Capacity: Accommodates the maximum number of S7-400 modules in a single rack, minimizing the need for expansion racks and reducing system complexity.
- Dual Bus Architecture: Integrated P-bus (peripheral bus) and K-bus (communication bus) ensure high-speed data exchange between all installed modules.
- Robust Mechanical Design: Heavy-duty aluminum profile construction withstands industrial vibration, shock, and temperature cycling in demanding plant environments.
- Universal Compatibility: Accepts all standard S7-400 CPUs, PS 405/407 power supplies, IM interface modules, and the full range of S7-400 signal and function modules.
- Scalable Architecture: Can be combined with expansion racks (ER1/ER2) via interface modules for large-scale distributed I/O configurations.
- Long Service Life: Designed for continuous 24/7 industrial operation with minimal maintenance requirements.
Industry & Equipment Applications
- Oil & Gas: Pipeline control systems, compressor station automation, SCADA integration
- Automotive Manufacturing: Body-in-white welding lines, paint shop conveyors, press shop automation
- Power Generation: Turbine control, substation automation, load management systems
- Chemical & Petrochemical: Batch process control, reactor management, safety instrumented systems (SIS)
- Water & Wastewater: Pump station control, treatment plant automation, SCADA-linked monitoring
- Discrete Manufacturing: Assembly line control, material handling, packaging machinery
System Integration & Compatible Parts
The 6ES7400-2JA10-0AA0 rack is the foundation of any S7-400 control cabinet. Typical compatible components include:
- Power Supplies: 6ES7405-0DA02-0AA0 (PS 405 4A), 6ES7407-0DA02-0AA0 (PS 407 4A), 6ES7407-0KA02-0AA0 (PS 407 10A)
- CPUs: 6ES7412-series, 6ES7414-series, 6ES7416-series, 6ES7417-series
- Interface Modules: 6ES7460-1BA01-0AB0 (IM 460-1), 6ES7461-1BA01-0AA0 (IM 461-1)
- Signal Modules: Full range of S7-400 SM 421/422/431/432 digital and analog I/O modules
Contact our technical team to verify exact compatibility for your project BOM.
Our Quality Assurance Process
- Source Verification: All units are sourced from authorized distributors, OEM surplus, or certified refurbishers with full traceability.
- Visual & Mechanical Inspection: Each rack is inspected for backplane bus integrity, slot connector condition, and structural damage before shipment.
- Functional Testing (Refurbished Units): Refurbished racks undergo powered system integration testing with compatible S7-400 modules.
- Authentic Parts Guarantee: We do not stock counterfeit or cloned components. All Siemens parts carry original markings and date codes.
- Warranty: 90-day replacement warranty on all shipped units. Extended warranty available on request.
How to Order
- Submit your inquiry via the Contact / RFQ form on this page or email support@konmask.com.
- Provide your required quantity, preferred condition (new / refurbished / used-tested), and target delivery timeline.
- Our team will respond within 1 business day with availability, lead time, and a formal quotation.
- Upon order confirmation, we arrange secure packaging and international freight with full tracking.
Why Choose Konmask.com?
- Industrial Automation Specialists: We focus exclusively on PLC, DCS, HMI, and industrial control components — not general electronics.
- Global Sourcing Network: Access to new, surplus, and refurbished S7-400 inventory from verified suppliers across Asia, Europe, and North America.
- Technical Expertise: Our team includes engineers with hands-on S7-400 system experience who can advise on compatibility and system design.
- Fast Response: RFQ responses within 24 hours. Emergency sourcing support available for critical plant downtime situations.
- Secure International Shipping: Export-compliant packaging, DDP/DAP Incoterms available, full customs documentation support.
Frequently Asked Questions
Q: What is the difference between the UR1 and UR2 rack for S7-400?
A: The UR2 (this model, 6ES7400-2JA10-0AA0) has 18 slots and can be used as either a central rack or an expansion rack. The UR1 (6ES7400-1JA01-0AA0) has 9 slots. The UR2 is the preferred choice for large S7-400 configurations requiring maximum module density.
Q: Can I use this rack with S7-300 modules?
A: No. The S7-400 backplane bus is not compatible with S7-300 modules. The 6ES7400-2JA10-0AA0 is designed exclusively for the SIMATIC S7-400 product family.
Q: Do you supply new or refurbished units?
A: We supply both. Please specify your preference in your RFQ. All conditions are clearly disclosed, and refurbished units are tested before shipment.
Q: What is the lead time for this part?
A: Lead time depends on current stock levels and your location. Typical lead time is 3–10 business days for in-stock units. Contact us for a real-time availability check.
Q: Can you provide a certificate of conformity or test report?
A: Yes. Documentation packages including inspection reports and certificates of conformity are available upon request for refurbished and tested units.
© 2026 Konmask.com. All rights reserved.
Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
{
“@context”: “https://schema.org”,
“@graph”: [
{
“@type”: “Product”,
“name”: “SIEMENS 6ES7400-2JA10-0AA0 Central Rack”,
“description”: “SIMATIC S7-400 18-slot central rack (UR2) for modular PLC system assembly. Compatible with all S7-400 CPUs, power supplies, and I/O modules.”,
“sku”: “6ES7400-2JA10-0AA0”,
“mpn”: “6ES7400-2JA10-0AA0”,
“brand”: {
“@type”: “Brand”,
“name”: “SIEMENS”
},
“manufacturer”: {
“@type”: “Organization”,
“name”: “Siemens AG”
},
“category”: “PLC Rack / Industrial Automation”,
“url”: “https://konmask.com/products/siemens-6es7400-2ja10-0aa0-central-rack-s7-400”,
“offers”: {
“@type”: “Offer”,
“url”: “https://konmask.com/products/siemens-6es7400-2ja10-0aa0-central-rack-s7-400”,
“priceCurrency”: “USD”,
“availability”: “https://schema.org/InStock”,
“seller”: {
“@type”: “Organization”,
“name”: “Konmask.com”,
“url”: “https://konmask.com”
}
}
},
{
“@type”: “FAQPage”,
“mainEntity”: [
{
“@type”: “Question”,
“name”: “What is the difference between the UR1 and UR2 rack for S7-400?”,
“acceptedAnswer”: {
“@type”: “Answer”,
“text”: “The UR2 (6ES7400-2JA10-0AA0) has 18 slots and can be used as either a central rack or an expansion rack. The UR1 (6ES7400-1JA01-0AA0) has 9 slots. The UR2 is preferred for large S7-400 configurations requiring maximum module density.”
}
},
{
“@type”: “Question”,
“name”: “Can I use this rack with S7-300 modules?”,
“acceptedAnswer”: {
“@type”: “Answer”,
“text”: “No. The S7-400 backplane bus is not compatible with S7-300 modules. The 6ES7400-2JA10-0AA0 is designed exclusively for the SIMATIC S7-400 product family.”
}
},
{
“@type”: “Question”,
“name”: “Do you supply new or refurbished units?”,
“acceptedAnswer”: {
“@type”: “Answer”,
“text”: “We supply both new and refurbished units. All conditions are clearly disclosed, and refurbished units are tested before shipment.”
}
},
{
“@type”: “Question”,
“name”: “What is the lead time for this part?”,
“acceptedAnswer”: {
“@type”: “Answer”,
“text”: “Typical lead time is 3–10 business days for in-stock units. Contact us for a real-time availability check.”
}
},
{
“@type”: “Question”,
“name”: “Can you provide a certificate of conformity or test report?”,
“acceptedAnswer”: {
“@type”: “Answer”,
“text”: “Yes. Documentation packages including inspection reports and certificates of conformity are available upon request for refurbished and tested units.”
}
}
]
}
]
}
