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Siemens 6EP1931-2FC21
by Siemens
Read verified buyer reviews ↓OverviewThe Siemens 6EP1931-2FC21 SITOP Buffer Module is essential for continuous functionality within your industrial automation infrastructure. Designed for seamless integration into 24V DC setups, this robust module acts as a critical safeguard against power fluctuations, voltage dips, and momentary power interruptions. With a powerful 20A output, it ensures that sensitive equipment such as PLCs, HMIs, and other vital automation components remain powered and operational, preventing costly downtime and production losses. Its compact size and proven reliability make it a cornerstone for any industrial environment requiring resilient power solutions. Precision-engineered by SIEMENS, a global leader in industrial technology, the 6EP1931-2FC21 uses advanced electrolytic capacitor technology for rapid and efficient energy storage and release. This intelligent design allows for an instantaneous response to power anomalies, bridging gaps during momentary outages and stabilizing voltage levels to protect your valuable machinery and processes. This buffer module is not merely a backup device; it is an investment in operational continuity and the long-term health of your industrial setup.Key Features Continuous Power Delivery: Eliminates risks from voltage drops and short power disruptions, ensuring ongoing operation of critical industrial processes. High-Capacity 20A Output: Delivers substantial power to support demanding industrial applications and high-power consumption devices. Advanced Energy Storage: Utilizes high-performance electrolytic capacitors for instantaneous energy delivery during power disruptions, protecting delicate electronics. Seamless SITOP System Integration: Specifically designed to complement and enhance existing SITOP power supply systems, facilitating straightforward installation and optimal performance. Robust and Space-Saving Design: Engineered for durability and compact dimensions, making it perfect for efficient mounting within control cabinets and challenging industrial environments. Enhanced System Stability: Significantly boosts the overall reliability and stability of your automation infrastructure by mitigating power-related issues. DIN Rail Compatibility: Offers simple and secure installation within standard industrial enclosures, simplifying integration into diverse setups. Technical Specifications Product Type: SITOP Buffer Module Part Number: 6EP1931-2FC21 Brand: SIEMENS Input Voltage: 24V DC Output Current: 20A Energy Storage Technology: Electrolytic Capacitor-based Buffering Mounting Type: DIN Rail Compliance: Adheres to rigorous industrial safety and automation standards, ensuring dependable and safe operation. Application Scope: Industrial Automation, Manufacturing, Process Control, Critical Power Backup Applications Industrial Automation Systems: Provides a stable and consistent power supply for programmable logic controllers (PLCs), human-machine interfaces (HMIs), and various sensors, preventing system resets and data loss. Manufacturing and Production Lines: Safeguards critical machinery and assembly lines from unexpected power sags or surges, minimizing production downtime and maintaining product quality. Process Control Environments: Ensures the uninterrupted operation of critical control processes in sectors such as chemical, pharmaceutical, and food and beverage. Emergency Power Backup for Critical Loads: Functions as a reliable short-term energy reservoir for essential components during utility power failures, allowing for graceful shutdowns or continued operation for brief periods. Data Centers and Server Rooms: Supports the continuous functioning of network equipment and control systems, protecting against minor disturbances that could affect data integrity. Why ChooseBenefit from the unparalleled reliability and quality assurance provided by SIEMENS, a globally recognized leader in industrial technology. This buffer module offers advanced energy storage, robust design, and seamless integration, making it an ideal choice for enhancing the stability and longevity of your industrial operations.Order NowEnhance your industrial infrastructure with the dependable Siemens 6EP1931-2FC21 SITOP Buffer Module. Contact us today to place your order and ensure the continuous operation of your critical systems.FAQWhat is the primary function of the Siemens 6EP1931-2FC21?Its primary function is to provide an uninterrupted power supply to sensitive industrial equipment by buffering against voltage drops and short power interruptions.What is the output capacity of this buffer module?The module provides a high-capacity output of 20A, suitable for demanding industrial applications.How does this buffer module store energy?It utilizes advanced electrolytic capacitor technology for efficient and instantaneous energy storage and release during power disturbances.Is the 6EP1931-2FC21 compatible with existing SITOP power supply systems?Yes, it is specifically designed for seamless integration with existing SITOP power supply systems to optimize performance.What mounting options are available for this device?The module is DIN rail mountable, allowing for straightforward and secure installation within standard industrial enclosures.
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Siemens 6EP1931-2FC21
Overview
This is a genuine Siemens component from the SITOP Power Supplies family. PalmPartsSolution stocks it in new, refurbished, and surplus condition with tested warranty and same-day shipping on in-stock units.
Whether you are sourcing a like-for-like replacement for an existing installation, an emergency spare to keep a line running, or a qualified part for a new build, our team can confirm availability, revision, and lead time before you order.
Key Features
- Genuine Siemens catalog part
- Tested before shipment
- Backed by PalmPartsSolution warranty
- Cross-reference and revision assistance available
- Compatible with the broader Siemens automation ecosystem
- Engineered to integrate inside SITOP Power Supplies installations
Compatibility
When ordering, match the full catalog/part number, hardware revision, and firmware revision called out by your Siemens equipment. Where applicable, confirm:
- Input/output voltage and current rating
- Communication protocol and network role
- Mounting form factor and footprint
- Operating temperature, humidity, and IP rating
- Required certifications (UL, CE, ATEX, marine, etc.)
Not sure which revision you need? Send us the catalog number on the nameplate and we will confirm the correct match.
Replacement Information
Three ways to source this part through PalmPartsSolution:
- Exact replacement — same Siemens catalog number, new or refurbished, tested and warrantied
- Form-fit-function equivalent — alternate revision or build that drops in without code changes
- Engineered migration — current-generation Siemens platform with documented conversion notes for the SITOP Power Supplies family
Contact our engineering team if you need help choosing between these tracks.
Technical Specifications
- Product Type: SITOP Buffer Module
- Part Number: 6EP1931-2FC21
- Brand: SIEMENS
- Input Voltage: 24V DC
- Output Current: 20A
- Energy Storage Technology: Electrolytic Capacitor-based Buffering
- Mounting Type: DIN Rail
- Compliance: Adheres to rigorous industrial safety and automation standards, ensuring dependable and safe operation.
- Application Scope: Industrial Automation, Manufacturing, Process Control, Critical Power Backup
Applications
- Industrial Automation Systems: Provides a stable and consistent power supply for programmable logic controllers (PLCs), human-machine interfaces (HMIs), and various sensors, preventing system resets and data loss.
- Manufacturing and Production Lines: Safeguards critical machinery and assembly lines from unexpected power sags or surges, minimizing production downtime and maintaining product quality.
- Process Control Environments: Ensures the uninterrupted operation of critical control processes in sectors such as chemical, pharmaceutical, and food and beverage.
- Emergency Power Backup for Critical Loads: Functions as a reliable short-term energy reservoir for essential components during utility power failures, allowing for graceful shutdowns or continued operation for brief periods.
- Data Centers and Server Rooms: Supports the continuous functioning of network equipment and control systems, protecting against minor disturbances that could affect data integrity.
Why Choose the 6EP1931-2FC21?
Benefit from the unparalleled reliability and quality assurance provided by SIEMENS, a globally recognized leader in industrial technology. This buffer module offers advanced energy storage, robust design, and seamless integration, making it an ideal choice for enhancing the stability and longevity of your industrial operations.
Availability & Shipping
- ▸In stock: 6EP1931-2FC21 ready for immediate dispatch from our Florida warehouse.
- ▸Free USA shipping: FedEx Priority (2–5 business days) and UPS Ground (3–5 business days). Expedited options available at checkout.
- ▸Worldwide delivery: FedEx International Priority (1–5 days), UPS International Priority (3–5 days), and USPS International (5–10 days) — rates calculated at checkout.
- ▸Bulk pricing: Volume discounts on request — contact our sales team for quantity quotes.
- ▸Buy with confidence: Every 6EP1931-2FC21 ships with a 1-Year PALM Parts warranty and a 30-day return window.
Frequently Asked Questions — Siemens
Machine down? We ship parts the same day.
New, surplus, and refurbished Siemens inventory in stock. Request a quote or speak directly with an automation specialist for emergency sourcing.
Related Siemens resources
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Independent Supplier Notice
PALM Parts Solution operates as an independent industrial automation supplier and is not an authorized distributor or affiliate of any listed manufacturer or brand name. Manufacturer trademarks and product names are used solely for identification purposes. Original manufacturer warranties do not apply. All products sold by PALM Parts are backed by our own 1-year warranty.
Product Condition & Firmware
All products are sold as new unless stated otherwise. Original manufacturer packaging may show signs of handling, storage, or shelf wear. Date codes and series may vary from current factory production. PALM Parts does not guarantee the presence, version, or compatibility of any firmware on PLC or automation products.