After more than two decades of reliable service in factories around the globe, the Siemens SIMATIC S7-300 is officially entering its end-of-life phase. Siemens announced the Product Phase-Out for the S7-300 and ET 200M series effective October 1, 2023, with the end of standard deliveries scheduled for October 1, 2025 (milestone PM410).
Table of content
From that point onward, the S7-300 will no longer be manufactured. Only spare parts will remain available - typically for another ten years, until around 2033 - in line with Siemens’ long-term service policy.
Why is the S7-300 being retired?
The move is part of Siemens’ broader strategy to modernise and unify its automation portfolio. The SIMATIC S7-1500 and ET 200SP/ET 200MP families now set the benchmark for industrial control systems, offering higher computing power, integrated security, and seamless connectivity through technologies such as Profinet and OPC UA, fully integrated within the TIA Portal environment.
What does this mean for users?
For manufacturers and system integrators, it’s time to start planning for migration. That doesn’t necessarily mean ripping out existing systems overnight. Siemens provides conversion tools and upgrade paths that allow step-by-step modernisation, enabling plants to move toward the S7-1500 platform while maintaining continuity and compatibility with existing hardware and programs.
Still need S7-300 parts?
While production is ending, supply hasn’t dried up. Automation Trader remains a leading source for Siemens automation components - including new, refurbished, and fully tested S7-300 modules. The company also offers expert advice and replacement support, helping manufacturers extend the life of their current installations or plan a smooth transition to newer systems.
With Automation Trader’s inventory and know-how, businesses can keep their production lines running and manage upgrades on their own schedule - without the fear of costly downtime or unavailable spares.
The discontinuation of the SIMATIC S7-300 marks the close of a chapter in industrial automation - but also the start of a smarter, more connected era. Thanks to suppliers like Automation Trader, users can still rely on access to genuine Siemens parts and experienced technical support long after official production ends.
