Refurbished Siemens SIMATIC S7-300 Series Products | Certified Spares & Legacy Support

Comprehensive S7-300 Solutions: We provide a complete range of refurbished Siemens SIMATIC S7-300 series products to ensure the continuous operation of your industrial assets. From high-performance CPUs to various signal modules, every component is meticulously restored and firmware-matched. We specialize in supporting legacy systems that are no longer available from the original manufacturer.

Additional information

Series Name

SIMATIC S7-300 Series Products

Product Range

CPUs, I/O Modules, CP, FM, IM & Accessories

Condition

New Surplus & Certified Refurbished

Compatibility

Fully compatible with STEP 7 & TIA Portal

Shipping

Global Rapid Shipping (Uzbekistan, Kazakhstan, etc.)

Scope of Supply

  • Central Processing Units (CPUs): Standard, Compact, and Failsafe CPUs with integrated I/O or dedicated communication ports (DP/PN)

  • Signal Modules (SM): Digital and Analog Input/Output modules (DI/DO/AI/AO) for 24V DC and 120/230V AC environments
  • Communication & Interface Modules: Processors for Industrial Ethernet, PROFIBUS (CP 343/342) and rack expansion modules (IM 360/365)
  • Special Accessories: Original Siemens MMC cards (64KB to 8MB), front connectors, and DIN rails.

Dismantling, Maintenance & Refurbishment

  • Deep Ultrasonic Cleaning: Removing industrial oxidation and residues from PCBs.
  • Logic Simulation Test: Verifying signal accuracy via STEP 7 / TIA Portal software

  • Voltage Integrity Check: Testing every I/O channel for precise voltage and current response

Services Provided

  • Customized System Integration: Hardware release (E-Stand) matching and configuration optimization based on your specific site conditions
  • Global Compliant Logistics: Secure anti-static (ESD) packaging for rail and air freight to ensure safe and rapid global delivery.
  • Veteran Field Engineering: Deployment of experienced technicians to supervise the process from hardware installation to system commissioning.
  • Operational Training & Docs: Comprehensive bilingual (CN/EN) O&M manuals and hands-on site training for your local technical team.

  • Long-term Spares & Warranty: 12-month operational warranty with continuous access to high-quality spare parts from our massive inventory

Why choose refurbished S7-300 series products over a full system migration?
Cost-efficiency and stability. Migration to S7-1500 requires new wiring, software conversion (TIA Portal), and significant downtime. Our certified S7-300 spares allow you to maintain your proven systems with zero process interruption
Every module undergoes a rigorous 21-step diagnostic process. We use original Siemens STEP 7 and TIA Portal software to perform logic-run tests and I/O port verifications, ensuring every unit is 100% functional before shipment
Yes. We understand that for legacy S7-300 racks, version matching (e.g., E-Stand 01 vs 05) is critical. Please provide the MLFB (6ES7…) and the specific version you need, and we will match it from our massive inventory
No content is added yet.