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Siemens 3RA1921-1B

Name: 3RA1921-1B
Brand: Siemens
SKU: 3RA1921-1B
Price: 23.77 GBP
Availability: InStock

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£23.77 (ex. VAT)

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Marvo Stock ID MV-1UJZ

HS Code 85366990

SKU 3RA1921-1B

Condition New unboxed

Category General Automation

Warranty 12 months

Weight (kg) 0.02

Length (mm) 60.00

Width (mm) 45.00

Height (mm) 90.00

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Specification & Description

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Commonly Asked Questions

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Specification & Description

Specification	Description
Part Number	3RA1921-1B
Alternative Part Number	3RA19211B
Manufacturer	Siemens
Category	General Automation
Product Type	Link Module
Application	For use with 3RV1.2 and 3RT1.2 contactors and circuit breakers
Operation	DC Operation
Size	Suitable for Size S0 circuit breakers and contactors
Packaging	Sold in multiples of 10 items
Product Brand Name	SIRIUS
Design	Electrical and mechanical link module designed for DC actuated systems
Commodity Code	85366990
Last Modified	Information available indicates modifications as of 10/16/2018; subject to change without notice

The Siemens 3RA1921-1B is a meticulously engineered link module designed to facilitate the seamless integration of circuit breakers and contactors within industrial control systems. This component is part of the esteemed SIRIUS product line, renowned for its reliability and versatility in a multitude of automation applications.

Crafted for compatibility with 3RV1.2 and 3RT1.2 devices, the 3RA1921-1B ensures both electrical and mechanical connections are established with precision. It is specifically tailored for DC operation, making it a suitable choice for systems that operate on direct current.

The link module's compact size corresponds with the S0 size specification for both circuit breakers and contactors, ensuring a perfect fit and streamlined installation process. Its design is focused on providing a straightforward solution for multi-unit packaging, which is particularly beneficial for large-scale operations that require consistency and ease of maintenance.

As a product that has been subject to a phase-out, the 3RA1921-1B's successor, the SIRIUS 3RA2 series, is recommended for new installations. However, for maintenance or direct replacement purposes, the 3RA1921-1B remains a reliable choice that upholds the quality standards associated with the Siemens brand.

This link module is a testament to Siemens' commitment to developing products that enhance the efficiency and operational coherence of industrial control systems. It stands as a testament to the brand's dedication to innovation and its ability to provide solutions that meet the evolving needs of the automation industry.

Commonly Asked Questions

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 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 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.

How do I create an account?

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.

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Our service to you

Lightning-Fast Express Shipping: Receive your order in record time with our express shipping options, ensuring you minimize downtime and keep your projects on track.

No-Risk Returns, Guaranteed: Return your parts anytime for a full refund. Our hassle-free return policy ensures you’re never stuck with something you don’t need.

Clear Pricing with No Hidden Fees: What you see is what you pay, transparent pricing with no extra costs, ever. Rest assured, all taxes and fees are already included in your final price.

Rock-Solid Reliability at a Fraction of the Cost: Get pre-owned electronic parts that are fully tested for peak performance, saving you money without compromising on quality, backed by a comprehensive warranty.

Frequently Asked Questions

What is the purpose of a link module?

A link module is designed to electrically and mechanically connect a circuit breaker with a contactor, facilitating the integration of motor protection and control functions.

Can this link module be used with any size of circuit breaker and contactor?

The Siemens 3RA1921-1B is specifically designed for use with size S0 circuit breakers and contactors.

Is this link module suitable for AC or DC operation?

The link module is intended for DC operation, ensuring compatibility with DC actuated circuit breakers and contactors.

How is the link module packaged?

The link module typically comes in multi-unit packaging, which may contain a standard quantity of 10 items per package.

What should I consider when looking for a successor to this link module?

When seeking a successor for the link module, it is recommended to consider the SIRIUS 3RA2 range, with the preferred successor type being >>3RA2921-1B<<.

Are there any certifications or approvals for this link module?

Yes, the link module comes with general product approvals and declarations of conformity, which attest to its compliance with relevant standards and regulations.

What is the significance of the design of the product?

The design of the product ensures that it is compatible with specific models of circuit breakers and contactors, in this case, for 3RV1.2 and 3RT1.2, and is optimised for DC actuation.

What should I do if I need a link module for a different size or type of device?

If you require a link module for a different size or type of device, you should look for a module that is specifically designed for compatibility with those devices to ensure proper operation and safety.

Part conditions explained

We want your buying experience to be as seamless as possible. So, here are all of the product descriptions you will see when browsing Marvo, explained a little further:

New unsealed: The product is in its original packaging, but the packaging has been opened or unsealed. It has never been used and should be in near pristine condition.

New sealed: The product is sealed in its original packaging. It has never been opened or used, ensuring that it's in an untouched state.

New unboxed: The product does not come in its original packaging, but it has never been used and is in great working condition.

Refurbished: The product has been previously used, but it has undergone a thorough refurbishment process to restore it to a like-new or functional condition. Any defects or issues have been addressed, making it suitable for reuse.

Used: The product has been previously owned and has been used. It may show signs of wear and tear but is still functional and operational. The condition may vary depending on the specific item and its usage history.

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