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Marvo Part ID: MV-2BY5

£130.29 (ex. VAT)


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You can return your part(s) and request a full refund at any time. Refer to our returns policy for more information.

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Commonly Asked Questions

What payment methods do you accept?

We accept card payments from all major credit, debit and Mastercard providers including Visa, American Express, Western Union, Paypal and bank transfers. Before you complete an order you will be prompted to input your payment details, at which point you can enter the relevant card information you wish to use for your transaction. If you are experiencing issues with your payment method then you can contact our team via email here. From there, you will be directed to the most relevant resource or person to help you complete your payment, get your order processed and ensure that your parts are on the way to your delivery address.


Is my order covered by a warranty?

Marvo provides a full 12-month warranty on all products, whatever the condition. For your peace of mind, all parts are ‘Marvo Approved’ which means that they have been tested and checked to ensure that they are in working condition. If you are unhappy with the part(s) you received and would like to request a return, you can do so by completing our quick and easy online form. Once we have received your Returns Request, a member of the team will be in touch to discuss this further with you. You can read more about our warranty policy here.


What countries can Marvo deliver to?

Marvo currently delivers to the United Kingdom (excluding Northern Ireland), the United States of America and Germany. If you cannot find your delivery address at checkout, this is most likely because Marvo does not currently deliver to this location. There are ongoing efforts to make Marvo accessible to a global market, keep your eyes peeled as our service expands to new locations. All orders are sold with a streamlined delivery process ensuring that you get your part, fast. Marvo is designed to offer you quick, easy and reliable access to critical components and uses well established global shipping services, including but not limited to DHL, UPS and FedEx.


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Creating an account is incredibly simple and takes a matter of seconds. You can create a Marvo account at any time by clicking here and following the simple steps on screen. By creating a Marvo account you can store your contact details, delivery addresses, billing addresses and more, meaning that you can enjoy game-changing convenience faster than ever before.


Is Marvo a credible parts supplier?

Marvo is a highly credible supplier of industrial automation parts and components with dedicated hubs around the world offering industry-leading products and services.  Marvo is committed to providing a quick, easy and reliable place to source your automation and control components. All purchases come as standard with a comprehensive 12-month return to base warranty meaning that, in just a few clicks, you can source critical parts more seamlessly than ever before. Click here to read an article on how Marvo is redefining convenience for automation and manufacturing professionals.


Have steps been taken to ensure quality control?

Marvo takes pride in product quality and has put several measures in place to assure high levels of quality standards. For your peace of mind, all parts have been ‘Marvo Approved’ which means that they have been tested and checked to ensure that they are in working condition. Redefine convenience and secure priority delivery on all parts along with a comprehensive 12-month warranty. This is the smart new way to buy automation and control components.


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Marvo Approved

A seal of quality that ensures each part is fully inspected, every time. Purchase with confidence thanks to Marvo Approved.


Full warranty

All parts are covered by a comprehensive warranty. If something goes wrong, I’ll put it right.


Priority delivery

Advanced tracking and a streamlined delivery process ensure that you get your part, fast.


Committed to you

Engineered to ensure that you always have a quick, easy and reliable place to source automation and control components.

6EP1931-2DC31 Product Description

The Siemens 6EP1931-2DC31 is a state-of-the-art DC UPS module designed to ensure an uninterrupted power supply for a variety of industrial applications. This module is adept at maintaining a stable 24V DC output with a nominal current capacity of 6A, making it an ideal choice for systems that require a reliable power source to prevent unexpected downtimes and equipment failures.

Crafted with precision, the 6EP1931-2DC31 features a robust design that allows for side-by-side mounting, optimising space within control cabinets. The unit's compact dimensions, with a width of 50mm and a height and depth of 125mm each, make it suitable for integration into a wide range of setups without requiring extensive space.

One of the key attributes of this UPS module is its intelligent battery management system, which includes features such as reverse polarity protection against both energy storage unit and input voltage polarity reversal. This ensures the longevity and safety of connected batteries and equipment. The module also boasts an impressive efficiency rate of approximately 95% during normal operation and 94.5% in battery operation, highlighting its energy-saving capabilities.

The 6EP1931-2DC31 is equipped with a serial interface for PC connection, allowing for advanced monitoring and control. The signalling aspect of the module is well-thought-out, with LED indicators providing clear status updates on normal operation, battery charge levels above 85%, and buffering mode. Additionally, the module includes floating changeover contacts for comprehensive status reporting.

Safety is paramount with the 6EP1931-2DC31, which does not feature galvanic isolation between input and output but is designed with a Class III operating resource protection class and an IP20 protection class, ensuring it meets industry standards for safety and reliability.

In summary, the Siemens 6EP1931-2DC31 DC UPS module is a versatile and reliable solution for maintaining uninterrupted power supply in industrial environments, offering advanced features and efficient operation in a compact and user-friendly design.

Frequently Asked Questions

What is the purpose of the SITOP DC UPS module?

The SITOP DC UPS module is designed to provide an uninterruptible power supply to ensure that critical applications and processes continue to operate smoothly during power disruptions. It maintains a stable DC output when the input power source fails.

Can the SITOP DC UPS module be used with batteries?

Yes, the module is compatible with batteries and includes features for charging and maintaining them to ensure continuous power supply during outages.

What is the input voltage range for this UPS module?

The UPS module operates within an input voltage range of 22 to 29 V DC, making it versatile for various industrial power supply scenarios.

Is the output of the UPS module short-circuit proof?

Yes, the output of the UPS module is designed to be short-circuit proof, enhancing the safety and reliability of the connected equipment.

How does the UPS module signal its operating states?

The module uses LED indicators and floating changeover contacts to signal various operating states such as normal operation, buffering mode, and alarms for issues like battery replacement requirements.

What is the efficiency rate of the UPS module during normal operation?

The UPS module operates with an efficiency rate of approximately 95% at rated output voltage and current during normal operation.

What type of interface does the UPS module have?

The UPS module is equipped with a serial interface, allowing for communication and control through a PC or other compatible devices.

What are the environmental operating conditions for the UPS module?

The module is designed to operate within an ambient temperature range of -25 to +60 °C, with a climate class of 3K3, ensuring no condensation under normal climatic conditions.

How is the UPS module mounted?

The module can be snapped onto a DIN rail EN 60715 35x7.5/15, facilitating easy installation within control cabinets and panels.

What is the required spacing for proper ventilation of the UPS module?

It is recommended to maintain a spacing of at least 50 mm above and below the UPS module to ensure adequate ventilation and cooling.