Critical Spares for S7-300 & S7-400 PLCs. Find essential memory cards, batteries, and mounting hardware for your reliable mid-range systems.

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S7-300 / ET200M 40-Pin Front Connector (6ES7392-1AJ00-0AA0)

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Siemens S7-300 / S7-400 Memory Backup Battery (6ES7971-0BA00-0AA0)

Original price was: ₹1,600.00.Current price is: ₹1,399.00.
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SIMATIC S7-300 Rail 830mm Mounting Rail (6ES7390-1AE80-0AA0) by plcparts india.
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SIMATIC S7-300 Rail 830mm Mounting Rail (6ES7390-1AE80-0AA0)

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Find all essential parts for your classic S7-300 and S7-400 PLCs here. This includes the most common spares, such as [Memory Backup Batteries](link to PLC Batteries & Power L2), MMCs, and mounting hardware. We keep high stock levels of these older, maintenance-heavy parts.