Siemens 6AV3971-1NA03-0DA0 | OP20 Memory Module 256KB | Original Spare Parts

6AV3971-1NA03-0DA0 — Siemens OP20 Memory Module | 256KB Industrial-Grade Spare Part

As a procurement manager sourcing critical automation components, you need parts that are 100% Brand New and Factory Sealed — no compromises. The Siemens 6AV3971-1NA03-0DA0 is a 256 KByte memory expansion module purpose-built for the SIMATIC OP20 operator panel series. Engineered to extend firmware storage capacity and enable multi-protocol communication, this Original New spare part is a cornerstone component in modern Industrial Automation and legacy PLC System environments alike.

Facilities running PROFIBUS DP networks or SIMATIC 505 architectures frequently encounter memory bottlenecks that degrade HMI responsiveness and increase unplanned downtime. The 6AV3971-1NA03-0DA0 directly resolves these challenges by delivering a robust, factory-validated memory upgrade that integrates seamlessly into existing Control Module configurations — without requiring hardware redesign. It is the preferred choice for engineers maintaining Siemens-based automation infrastructure across Oil & Gas, Power Generation, and discrete manufacturing sectors.

Sourced directly from authorized channels, every unit is verified as 100% Original and Brand New, backed by a 1-Year Warranty and supported by our global logistics network for fast delivery to your facility.

Core Features & Technical Advantages

• 256 KByte (262,144 bytes) high-density memory capacity for expanded OP20 firmware storage
• PROFIBUS DP Protocol Support — enables high-speed distributed I/O communication in complex PLC System topologies
• SIMATIC 505 Compatible — precision-engineered for seamless integration with legacy Siemens control architectures
• Non-Siemens PLC Connectivity — heavy-duty interoperability for multi-vendor Industrial Automation environments
• Factory Pre-loaded Firmware — plug-and-play deployment with zero configuration overhead
• Robust Operating Range: 0°C to 55°C operating / -40°C to 70°C storage; IP20 front panel protection
• Compact & Lightweight: 0.109 kg — minimal footprint for panel-space-constrained installations

Technical Specifications & Selection Guide

Selection Tip: Verify your OP20 panel firmware revision before ordering. This module is optimized for OP20 series; for OP77B or TP177B panels, alternative part numbers apply.

Typical Application Scenarios

The 6AV3971-1NA03-0DA0 delivers measurable value across a wide range of heavy-industry verticals:

1. Oil & Gas Processing: Upstream and downstream facilities rely on OP20 panels for real-time process visualization. Memory limitations in aging HMIs create critical blind spots — this module eliminates that risk by expanding available firmware space without panel replacement.
2. Power Plants & Substations: Turbine control and generator monitoring systems demand uninterrupted HMI availability. The PROFIBUS DP capability of this Control Module ensures deterministic communication latency in high-stakes environments.
3. Pharmaceutical & Chemical Manufacturing: GMP-regulated facilities require validated, Original New spare parts with traceable documentation. This Siemens-branded module meets those compliance requirements out of the box.
4. Automotive Assembly Lines: High-throughput production environments benefit from the module’s robust operating temperature range and plug-and-play firmware, minimizing changeover downtime.
5. Water & Wastewater Treatment: Remote SCADA-connected OP20 panels in distributed treatment plants gain enhanced memory headroom for expanded alarm and trend logging via this Industrial Automation upgrade.

Logistics & Professional Service

• ✅ 2-Day Express Shipping available to major global destinations — minimizing your production downtime window
• ✅ 1-Year Warranty on all units, covering manufacturing defects and functional failures
• ✅ EOL Legacy System Support — we specialize in sourcing discontinued and hard-to-find Siemens Spare Parts for aging PLC System infrastructure
• ✅ Certificate of Origin & Datasheet provided upon request for compliance and audit purposes
• ✅ Fast Global Shipping with full tracking — serving customers across North America, Europe, Southeast Asia, and the Middle East

FAQ — Frequently Asked Questions

Q1: Is the 6AV3971-1NA03-0DA0 genuinely 100% Original and Brand New?
A: Absolutely. Every unit we supply is sourced from authorized distributors and is 100% Original and Brand New, factory sealed in original Siemens packaging. We do not deal in refurbished, repaired, or counterfeit components.

Q2: What is the lead time for the 6AV3971-1NA03-0DA0?
A: In-stock units ship within 1-2 business days. For bulk orders or units requiring procurement, standard lead time is 5-10 business days. Contact us for real-time stock confirmation and expedited options.

Q3: Can you provide a Datasheet or technical documentation for this module?
A: Yes. The official Siemens datasheet, wiring diagram, and installation manual for the 6AV3971-1NA03-0DA0 are available upon request. Email sale@ninermas.com with your inquiry and we will respond within 24 hours.

Q4: Is this module compatible with non-Siemens PLCs?
A: Yes. The module supports non-Siemens PLC connectivity via standard PROFIBUS DP protocol, making it suitable for mixed-vendor Industrial Automation architectures.

Q5: What is the price for the 6AV3971-1NA03-0DA0?
A: Pricing is listed on this page and reflects current market rates for Original New Siemens Spare Parts. Volume discounts are available for orders of 5+ units. Contact our sales team for a formal quotation.

Q6: Do you provide a Certificate of Origin for customs clearance?
A: Yes. A Certificate of Origin (COO) confirming German manufacture (Country of Origin: DE) is available for all shipments requiring customs documentation.

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