Siemens 6ES7403-1JA01-0AA0 Programmable Logic Controller

The Siemens 6ES7403-1JA01-0AA0 PLC belongs to the SIMATIC S7-400 Racks family and functions as an extension rack to expand automation systems that require additional signal module capacity. With 9 slots available, it provides engineers the flexibility to scale distributed I/O systems while maintaining stable performance. This rack supports redundant power supplies, reducing downtime risks in mission-critical applications. Measuring 27.40 × 39.50 × 4.50 cm and weighing 2.32 kg, it offers a compact yet durable build for industrial use. Although listed as an active PM300 lifecycle product, Siemens has announced a phase-out from 01.10.2025, making timely procurement important for long-term system compatibility. Industrial buyers trust the 6ES7403-1JA01-0AA0 for its scalability, Siemens build quality, and ability to extend the performance of existing SIMATIC S7-400 installations. Designed as an ER2 extension rack with 9 slots, it is purpose-built to house signal modules and supports the integration of 2 redundant power supplies for higher system reliability in distributed automation environments.

Applications of the Siemens 6ES7403-1JA01-0AA0 PLC rack include distributed automation systems across manufacturing, process, and infrastructure sectors. In automotive and electronics assembly lines, it enables seamless expansion of signal processing capabilities. In industries such as food, pharmaceuticals, and chemicals, the rack supports large I/O configurations needed for process control and monitoring. Utilities and energy plants benefit from its ability to house signal modules while ensuring redundancy with dual power supply options. Maintenance engineers and students can learn how this ER2 rack provides modular scalability and redundancy support, ensuring system resilience even in distributed control environments. By adopting the Siemens 6ES7403-1JA01-0AA0, industries achieve reliable expansion, reduced downtime, and long-term integration within the SIMATIC ecosystem—though buyers should note the upcoming phase-out timeline for future planning.