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Siemens 3RH2122-2KB40

Name: 3RH2122-2KB40
Brand: Siemens
SKU: 3RH2122-2KB40
Price: 64.18 GBP
Availability: InStock

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£64.18 (ex. VAT)

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Marvo Stock ID MV-7CA1

HS Code 85364900

SKU 3RH2122-2KB40

Condition New sealed

Warranty 12 months

Weight (kg) 1.00

Length (mm) 320.00

Width (mm) 250.00

Height (mm) 250.00

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Specification & Description

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Commonly Asked Questions

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Specification & Description

Specification	Description
Part Number	3RH2122-2KB40
Alternative Part Number	3RH21222KB40
Manufacturer	Siemens
Category	Electrical Control Components
Type	Coupling Contactor Relay
Contact Configuration	2 NO (Normally Open) + 2 NC (Normally Closed)
Rated Control Supply Voltage	24 V DC
Operating Temperature Range	-25 to +60 °C
Mounting Type	DIN Rail
Terminal Type	Screw
Standards	IEC/EN 60947-5-1, UL, CSA
Safety Features	Positively driven operation according to IEC 60947-5-1
Electrical Durability	High number of operating cycles
Mechanical Durability	Robust construction for long-term use
Commodity Code	853649
Special Characteristics	Suitable for use in safety applications with appropriate safety measures

The Siemens 3RH2122-2KB40 is a coupling contactor relay designed to meet the rigorous demands of industrial automation and control systems. This compact and reliable component is part of the SIRIUS product family, renowned for its high-quality engineering and versatility in various applications.

Crafted for railway applications, the 3RH2122-2KB40 operates with a DC control supply voltage of 24V and features an integrated suppressor diode to protect against voltage spikes. It is engineered to function within a wide operating range factor of the magnet coil, from 0.7 to 1.25 times the rated value, ensuring stable performance even under fluctuating power conditions.

The relay is equipped with two normally open (NO) and one normally closed (NC) contacts, making it suitable for a variety of switching tasks. The spring-loaded terminal design ensures a secure and maintenance-free connection, which is crucial for the consistent operation of the relay over time.

With an insulation voltage rated at 690V and an installation altitude capability of up to 2000 meters above sea level, the 3RH2122-2KB40 is built to withstand challenging environmental conditions. Its robust construction provides a high degree of pollution resistance and is finger-safe, offering additional protection against electrical shock.

The contactor relay boasts an impressive mechanical operating cycle, with typical values reaching up to 30 million for the contactor itself and 10 million when auxiliary switch blocks are added. This highlights the component's durability and long service life, making it a cost-effective choice for long-term use.

The 3RH2122-2KB40 is also characterised by its shock resistance, capable of handling both rectangular and sine pulse shocks, ensuring reliability in environments subject to vibration and impact.

Overall, the Siemens 3RH2122-2KB40 coupling contactor relay is a high-performance and versatile component that provides reliable operation in a wide range of industrial settings. Its robust design and flexible features make it an excellent choice for those seeking a durable and efficient solution for their automation and control systems.

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 function of a coupling contactor relay?

A coupling contactor relay is used to switch a small control signal, which then controls a larger load within an electrical circuit. It's typically used in applications where interfacing between different control voltages or circuits is necessary.

Can this relay be used in safety-related applications?

Yes, the relay is designed with positively driven operation to IEC 60947-5-1, making it suitable for use in safety-related applications. It has specific safety-related data such as B10 value and failure rate that can be considered for such uses.

What are the contact configurations available for this relay?

This relay comes with a contact configuration of 2 normally open (NO) contacts and 1 normally closed (NC) contact, providing flexibility for various control circuit designs.

What is the rated control supply voltage for this relay?

The rated control supply voltage for this relay is DC 24V, with an operating range of 0.7 to 1.25 times the rated voltage, including an integrated suppressor diode.

What are the dimensions of this relay?

The exact dimensions can vary, but typically, a relay of this type would conform to the standard dimensions for a size S00 contactor. Please refer to the manufacturer's datasheet for precise measurements.

Is there any specific environmental consideration for the operation of this relay?

Yes, the relay can operate within an ambient temperature range of -40 to +70 degrees Celsius and can be stored in temperatures ranging from -55 to +80 degrees Celsius. It is also designed to withstand certain levels of shock and vibration, making it suitable for railway applications.

How can I ensure the relay is installed safely?

The relay should be installed by a qualified electrician, ensuring that it is finger-safe and that all connections are secure. It should be mounted in a location that respects its environmental and operational limits.

What is the insulation voltage rating for this relay?

The insulation voltage rating for this relay is 690V with a degree of pollution 3, which indicates its capability to withstand a certain level of voltage without compromising safety.

Can this relay be used at high altitudes?

Yes, this relay can be used at altitudes up to 2,000 meters above sea level without degrading its performance or safety.

Part conditions explained

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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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