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Siemens 3RH2131-2KB40

Name: 3RH2131-2KB40
Brand: Siemens
SKU: 3RH2131-2KB40
Price: 47.33 GBP
Availability: InStock

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£47.33 (ex. VAT)

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Marvo Stock ID MV-7CBP

HS Code 85364900

SKU 3RH2131-2KB40

Condition New sealed

Warranty 12 months

Weight (kg) 0.10

Length (mm) 73.00

Width (mm) 45.00

Height (mm) 70.00

EAN 4011209847101

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Specification & Description

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Commonly Asked Questions

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Specification & Description

Specification	Description
Part Number	3RH2131-2KB40
Alternative Part Number	3RH21312KB40
Manufacturer	Siemens
Contact Configuration	3 Normally Open (NO) + 1 Normally Closed (NC)
Control Supply Voltage	24 V DC
Operating Voltage Range	0.7 ... 1.25 times the rated control supply voltage (US) with integrated suppressor diode
Ambient Operating Temperature	-25°C to +60°C
No-load Switching Frequency	10,000 operations per hour at AC/DC
Holding Power of Magnet Coil	2.8 W at DC
Closing Delay	30 ... 100 ms at DC
Opening Delay	7 ... 13 ms at DC
Arcing Time	10 ... 15 ms
Operating Current at AC-12	Maximum 10 A
Operating Current at AC-15	10 A at 230 V, 3 A at 400 V, 2 A at 500 V, 1 A at 690 V
Operating Current at DC-12	Refer to datasheet for specific values
Safety Related Data	B10 value of 1,000,000 with high demand rate according to SN 31920
Product Function	Positively driven operation according to IEC 60947-5-1
Approvals	General Product Approval, EMC, KC, Functional Safety/Safety of Machinery, various certificates
Environmental Confirmations	UL/CSA ratings: A600/Q600 for auxiliary contacts according to UL
Commodity Code	853649

The Siemens 3RH2131-2KB40 is a coupling contactor relay designed to facilitate the switching of auxiliary circuits in a variety of industrial applications. This compact and reliable component is part of the SIRIUS product family and is characterised by its size S00, making it suitable for integration into space-constrained environments.

Crafted with precision, the 3RH2131-2KB40 features three normally open (NO) and one normally closed (NC) contact, operating with a control supply voltage of 24 V DC within a range of 0.7 to 1.25 times the rated voltage. This flexibility ensures compatibility with a wide range of control voltages for diverse industrial requirements.

The unit comes equipped with an integrated suppressor diode, which serves to protect the control circuit from voltage spikes, enhancing the overall reliability and longevity of the relay. Additionally, the spring-type terminal design is optimised for PLC outputs, ensuring a secure and maintenance-friendly connection.

With an insulation voltage rated at 690V and a surge voltage resistance of 6kV, the 3RH2131-2KB40 is built to withstand challenging electrical environments. It also boasts a mechanical service life of up to 30 million switching cycles, testifying to its durability and robustness.

The relay operates efficiently within a broad ambient temperature range, making it suitable for use in various climatic conditions. Its finger-safe construction and IP20 protection class on the front provide a degree of protection against direct contact and solid objects, further enhancing its operational safety.

The Siemens 3RH2131-2KB40 is a testament to high-quality engineering, offering reliable performance for the switching of auxiliary circuits in industrial control systems. Its design and features make it a versatile choice for professionals seeking a dependable solution for their automation needs.

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.

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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 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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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 voltage rating for this coupling contactor relay?

The coupling contactor relay is rated for a control supply voltage of 24 V DC, with an operating range of 0.7 to 1.25 times the rated voltage.

Can you explain the contact configuration of this relay?

Certainly, this relay features a contact configuration of 3 normally open (NO) contacts and 1 normally closed (NC) contact.

Is there any built-in protection for the relay's coil?

Yes, the relay includes an integrated suppressor diode to protect the coil from voltage spikes.

What type of terminals does this relay have for connection?

This relay is equipped with spring-type terminals, which are suitable for quick and secure connections, including PLC outputs.

What is the size classification of this relay?

The relay falls under the size S00 classification, making it compact and suitable for various applications.

How does this relay perform in terms of mechanical service life?

The relay has a mechanical service life of typically 30 million switching cycles, indicating a high level of durability for long-term use.

What is the insulation voltage rating for this device?

The insulation voltage rating for this device, with a degree of pollution 3, is rated at 690 V.

What is the protection class for the front of the relay?

The front of the relay has a protection class of IP20, providing a basic level of protection against solid objects.

Is this relay suitable for use with positively driven operations?

Yes, the relay supports positively driven operation according to IEC 60947-5-1 standards.

What is the surge voltage resistance of this relay?

The surge voltage resistance of this relay is rated at 6 kV.

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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