Product Description
The Siemens 6ES7924-0CC21-0AA0 is a robust front connector designed for seamless integration with Siemens SIMATIC S7-300 programmable logic controllers. This 20-pin connector ensures a secure and reliable electrical connection for signal transmission between the PLC and external devices. Constructed with high-quality materials, it guarantees durability and longevity in demanding industrial environments. The connector's precise engineering allows for quick and easy installation, minimizing downtime and maximizing operational efficiency. It is an essential component for establishing a stable and dependable control system, contributing to optimal performance and reduced maintenance requirements. This front connector is a critical element for any S7-300 based automation solution.
Is Your Device Showing These Signs?
Siemens 6ES7924-0CC21-0AA0, a SIMATIC S7-300 front connector, commonly presents issues such as damaged pins resulting in communication failures with I/O modules. Corrosion on the connector's contacts causes signal degradation and intermittent connectivity problems, necessitating replacement. Broken locking mechanisms lead to insecure connections and potential disconnections during operation, requiring immediate attention. Internal wiring within the connector may experience shorts or open circuits, disrupting signal transmission and demanding thorough inspection or component exchange. Furthermore, physical damage to the connector housing compromises its integrity and protection against environmental factors, mandating replacement to ensure proper functionality and prevent further system malfunctions.
Technical specifications
The Siemens 6ES7924-0CC21-0AA0 is a front connector designed for use with Siemens SIMATIC S7-300 programmable logic controllers. This 20-pin connector facilitates the connection of discrete input/output signals to the PLC. It features screw-type terminals for secure and reliable wire connections, accommodating conductors with a cross-sectional area ranging from 0.14 to 2.5 mm. The connector body is constructed from durable, self-extinguishing plastic material, ensuring robustness and compliance with industry safety standards. Integrated strain relief minimizes stress on the connected wires, enhancing long-term reliability. The 6ES7924-0CC21-0AA0 provides a direct, plug-in interface to the S7-300 I/O modules, simplifying installation and maintenance procedures. It is an essential component for establishing a robust and dependable control system using Siemens S7-300 PLCs.
Our Repair Process for the
6ES7924-0CC21-0AA0
Our repair process for the Siemens 6ES7924-0CC21-0AA0 begins with a comprehensive diagnostic evaluation to pinpoint the fault. This includes a thorough inspection of all components, testing of input/output channels, and a review of the device's operational history if available. Once the fault is identified, we proceed with component-level repair or replacement using only Siemens-approved parts. Repaired units then undergo rigorous functional testing under simulated operating conditions to ensure complete restoration of performance and adherence to original factory specifications. Finally, the repaired Siemens 6ES7924-0CC21-0AA0 is cleaned, carefully packaged, and returned with a detailed repair report.
Your Guarantee: Warranty & Lifetime Support
Your satisfaction is our top priority, and we confidently stand behind the quality of our repairs. That's why every repair service is covered by our comprehensive 24-month warranty. Furthermore, we offer lifetime phone support – if you have questions or need assistance related to our repair down the road, we're here to help. Our service commitment is straightforward: we guarantee our work, and if you're not satisfied, we will make it right. Learn More about our Repair process.
Comprehensive Repairs You Can Depend On
We take immense pride in the quality and reliability of our work. Our process goes beyond simply fixing the immediate problem. We perform a comprehensive inspection of your main board (or other equipment) and proactively replace components known to be failure-prone or showing signs of potential future failure. Before any item is returned, it undergoes rigorous functional testing to ensure it meets performance specifications and operates flawlessly. Visit our main Repair Services page to learn more.
Save Significantly
Our primary goal is to save you hundreds, or even thousands, of dollars compared to the cost of new equipment replacement. By repairing existing components, we provide an economical solution that is also eco-friendly. At Roc Industrial, our commitment to integrity and community drives our consistent growth and ensures you receive a reliable, cost-effective solution.

Please Note: Roc Industrial operates as an independent service provider and is not an authorized distributor for the manufacturers or brands mentioned. Consequently, the original manufacturer's warranty is not applicable to items repaired or sold by us. Roc Industrial provides its own 2-year warranty on all repair services performed.

















