In most procurement cycles, 6ES7403-1JA11-0AA0 is considered with Schneider PLC, Siemens HMI and 6Es7 215 1Ag40 0Xb0, giving decision-makers confidence that they’ve chosen the most dependable component.
Siemens 6ES7403-1JA11-0AA0 Programmable Logic Controller
The Siemens 6ES7403-1JA11-0AA0 is a durable PLC (Programmable Logic Controller) rack from the Siemens SIMATIC S7-400 series.

| Brand | Siemens |
| Product Type | Programmable Logic Controller |
| Product | 6ES7403-1JA11-0AA0 |
Siemens 6ES7403-1JA11-0AA0 Programmable Logic Controller - Technical Specifications
| Specification | Value |
|---|---|
| Product Description | SIMATIC S7-400, extended rack ER2 aluminum, with 9 slots, for signal modules, 2 redundant PS can be plugged in |
| Product family | Racks |
| Product Lifecycle (PLM) | PM300:Active Product |
| PLM Effective Date | Product phase-out since: 01.10.2025 |
| Region Specific PriceGroup / Headquarter Price Group | 240 / 240 |
| Metal Factor | None |
| Net Weight (kg) | 1,563 Kg |
| Packaging Dimension | 27,40 x 39,30 x 4,60 |
| Package size unit of measure | CM |
The Siemens 6ES7403-1JA11-0AA0 PLC belongs to the SIMATIC S7-400 racks family and provides the flexibility needed to expand distributed automation systems. With 9 slots, this rack supports additional signal modules, enabling engineers to scale their control infrastructure without compromising stability. Its aluminum construction ensures strength while maintaining a lightweight build of just 1.563 kg. Measuring 27.40 × 39.30 × 4.60 cm, it offers compact integration into control cabinets. Redundant power supply support enhances uptime in mission-critical applications, minimizing operational risks. Although currently listed as an active PM300 lifecycle product, Siemens has announced its phase-out from 01.10.2025, making it important for buyers to plan upgrades or secure spare units in advance. Engineers value the 6ES7403-1JA11-0AA0 for its combination of scalability, Siemens build quality, and lifecycle support. Built as an ER2 aluminum extension rack with 9 slots, it is designed specifically for signal modules and allows 2 redundant power supplies to be plugged in, ensuring higher reliability in industrial automation systems.
Applications of the Siemens 6ES7403-1JA11-0AA0 PLC rack include distributed and central automation environments across multiple industries. In automotive and electronics manufacturing, it provides the additional rack space required for complex I/O configurations. In process industries such as food, chemicals, and pharmaceuticals, the rack enables safe and reliable integration of extra signal modules, while redundant power supply options reduce downtime. Energy plants and utilities use the 6ES7403-1JA11-0AA0 for distributed monitoring and control setups where stability and redundancy are essential. For engineering students and maintenance professionals, this ER2 rack demonstrates Siemens’ modular approach to industrial automation. By adopting the Siemens 6ES7403-1JA11-0AA0, industries gain scalable expansion, redundancy, and proven integration within the SIMATIC S7-400 ecosystem, though future planning is advised due to the product’s upcoming phase-out timeline.




