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Marvo Part ID: MV-29HX

£115.97 (ex. VAT)


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Stars Martin Ruml

‘Rapid delivery.’

Stars Milan Kosík

‘Large selection of spare parts, fast delivery.’

Get your order by 26/06/2024

If ordered within 00:00:00

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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.


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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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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.


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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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3RP1540-1BB31 Product Description

The Siemens 3RP1540-1BB31 is a high-quality time relay designed for a variety of industrial applications. This electronic timing relay offers an OFF delay function with 2 change-over contacts, operating without auxiliary voltage. It features 9 time setting ranges from 0.05 seconds up to 600 seconds, catering to a broad spectrum of timing requirements.

Constructed for durability and reliability, the 3RP1540-1BB31 is equipped with a 24 V AC/DC control supply voltage and includes an LED indicator for easy monitoring of operation status. The screw terminal design ensures a secure and stable connection, which is essential for consistent performance in industrial environments.

This time relay is part of the SIRIUS product family, known for its integration capability and versatility in automation systems. With a compact design, it requires minimal space for installation and can be mounted in any position, providing flexibility in setup. The device is also designed with a protection class of IP20, ensuring protection against solid objects larger than 12mm.

The 3RP1540-1BB31 is a phased-out product, but it remains a reliable choice for those seeking a time relay with proven performance in controlling time sequences and delay functions in their automation processes. It is suitable for a range of applications, including machine tool control, process control, and other time-dependent automation tasks.

Frequently Asked Questions

What type of device is this and what is its primary function?

This device is an electronic timing relay designed for various timing functions, primarily used to facilitate delayed switching operations in control circuits.

Can this timing relay be mounted on a DIN rail?

Yes, the timing relay is designed for screw and snap-on mounting onto a 35 mm standard mounting rail, making it suitable for DIN rail installations.

What are the ambient operating conditions for this timing relay?

The timing relay can operate within an ambient temperature range of -25°C to +60°C, at a relative humidity of 10% to 95%, and at an installation altitude of up to 2000 metres above sea level.

What are the voltage requirements for the control supply of this relay?

The control supply voltage for the relay can be either 24 V AC with a frequency of 50 to 60 Hz or 24 V DC, with an operating range factor of 0.85 to 1.1 times the rated value.

What are the time setting ranges available on this relay?

The relay offers 9 time setting ranges from 0.05 seconds up to 600 seconds, providing flexibility for various timing requirements.

What type of terminals does this timing relay have for electrical connections?

The timing relay is equipped with screw-type terminals, which are suitable for connecting solid or finely stranded wires with or without core end processing.

What is the protection class of this timing relay?

The timing relay has a protection class of IP20, indicating that it is protected against solid objects larger than 12.5 mm but not against water.

How many switching cycles can this timing relay endure mechanically and electrically?

Mechanically, the timing relay can endure up to 10 million switching cycles, and electrically it can handle up to 100,000 switching cycles at AC-15 at 230 V.

Does this timing relay have LED indicators?

Yes, the timing relay is equipped with an LED indicator to provide visual confirmation of its operational status.

What certifications does this timing relay hold?

The timing relay has a General Product Approval and conforms to relevant EMC standards, ensuring its compliance with industry regulations.