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Siemens 3RH1921-2DE11

Name: 3RH1921-2DE11
Brand: Siemens
SKU: 3RH1921-2DE11
Price: 35.52 GBP
Availability: InStock

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£35.52 (ex. VAT)

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Marvo Stock ID MV-7C87

HS Code 85365080

SKU 3RH1921-2DE11

Condition New unboxed

Warranty 12 months

Weight (kg) 0.03

Length (mm) 71.00

Width (mm) 10.00

Height (mm) 72.50

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Specification & Description

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Commonly Asked Questions

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Specification & Description

Specification	Description
Part Number	3RH1921-2DE11
Alternative Part Number	3RH19212DE11
Manufacturer	Siemens
Product Type	Auxiliary Switch Block
Application	For Contactor Relay and Power Contactor
Insulation Voltage	500 V
Operating Current	10 A
Dimensions	18.3 x 70.7 x 80 mm
Mounting Type	Snap-on mounting
Number of Contacts	1 Normally Open (NO), 1 Normally Closed (NC)
Contact Reliability	1 faulty switching per 100 million (17 V, 1 mA)
Mechanical Operating Cycles	5,000,000 typical
Electrical Operating Cycles	200,000 at AC-15, at 230 V typical
Ambient Operating Temperature	-25 … +60 °C during operation
Storage Temperature	-55 … +80 °C
Protection Class	IP20 on the front
Connection Type	Spring-loaded terminals
Conductor Cross-section	2x (0.5 ... 1.5 mm²) finely stranded with core end processing, 2x (0.5 ... 2.5 mm²) without
Compliance	Mirror contact according to IEC 60947-4-1, Positively driven operation according to IEC 60947-5-1 (No)
Surge Voltage Resistance	Rated value 6 kV

The Siemens 3RH1921-2DE11 is a high-quality auxiliary switch block designed for seamless integration with contactor relays and power contactors. This component is essential for a variety of industrial applications where reliable switching operations are critical. With an insulation voltage rated at 500 V and operational capabilities of 10 A, it ensures robust performance in demanding environments.

Crafted with precision, the switch block measures 18.3 x 70.7 x 80 mm, making it compact enough to fit into various setups without compromising on functionality. The unit features a snap-on mounting design for ease of installation and maintenance. It is equipped with spring-loaded terminals that facilitate secure and efficient electrical connections, accommodating a range of conductor cross-sections.

The 3RH1921-2DE11 is engineered to withstand a wide range of ambient temperatures, from as low as -25°C to as high as +60°C during operation, ensuring reliability across diverse operating conditions. It boasts an impressive mechanical service life, capable of up to 5 million switching cycles, highlighting its durability and longevity.

This auxiliary switch block is not only robust but also designed with safety in mind, featuring a mirror contact function in accordance with IEC 60947-4-1 standards. However, it does not support positively driven operation as per IEC 60947-5-1. Its construction adheres to a protection class of IP20, safeguarding the internal components from external factors.

The Siemens 3RH1921-2DE11 auxiliary switch block is a testament to Siemens' commitment to quality, reliability, and performance, making it a valuable component in the industrial controls sector.

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 insulation voltage rating for this auxiliary switch block?

The insulation voltage rating for the auxiliary switch block is 500 V, with a degree of pollution 3.

Can this auxiliary switch block be used with any contactor relay or power contactor?

This auxiliary switch block is designed for use with specific Siemens contactor relays and power contactors, particularly the 3RT1 series.

What is the ambient operating temperature range for this component?

The ambient operating temperature range for this component is between -25 °C and +60 °C.

How many mechanical operating cycles can this auxiliary switch block withstand?

The auxiliary switch block can typically withstand 5,000,000 mechanical operating cycles.

What type of terminals does this auxiliary switch block have for connection?

This auxiliary switch block is equipped with spring-loaded terminals for the auxiliary and control circuit connections.

What are the dimensions of this auxiliary switch block?

The dimensions of the auxiliary switch block are 18.3 mm in width, 70.7 mm in height, and 80 mm in depth.

What is the contact reliability for the auxiliary contacts of this switch block?

The contact reliability for the auxiliary contacts is rated at 1 faulty switching per 100 million operations at 17 V, 1 mA.

What is the surge voltage resistance of this auxiliary switch block?

The surge voltage resistance of this auxiliary switch block is rated at 6 kV.

How is this auxiliary switch block mounted?

This auxiliary switch block is designed for snap-on mounting, making it easy to install onto compatible devices.

What is the function of the mirror contact feature in this auxiliary switch block?

The mirror contact feature ensures that the auxiliary contacts provide a reliable indication of the state of the main contacts, complying with IEC 60947-4-1 standards.

Part conditions explained

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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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