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Siemens 3RH1921-1LA11

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Marvo Stock ID MV-7C80

HS Code 85365080

SKU 3RH1921-1LA11

Warranty 12 months

Weight (kg) 1.00

Length (mm) 210.00

Width (mm) 170.00

Height (mm) 60.00

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Specification & Description

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Commonly Asked Questions

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Specification & Description

Specification	Description
Part Number	3RH1921-1LA11
Alternative Part Number	3RH19211LA11
Manufacturer	Siemens
Part Type	Auxiliary Switch Block
Voltage	690 V (Insulation)
Mounting	Snap-On Mount
Contact Configuration	1NO/1NC
Current Rating	10 A
Dimensions	44 x 51 x 38 mm
Application	For motor contactors, cable entry at the top
Protection Class	IP20
Ambient Temperature (Storage)	-55 … +80°C
Ambient Temperature (Operating)	-25 … +60°C
Mechanical Operating Cycles	Typical 10,000,000
Electrical Operating Cycles	Typical 200,000 at AC-15 / at 230 V
Insulation Voltage	Rated value 690 V
Impulse Voltage Resistance	Rated value 6 kV
Mounting Type	Snap-on mounting
Connections/Terminals	Screw-type terminals for auxiliary and control current circuit
Safety	Product function / mirror contact to IEC 60947-4-1
Commodity Code	853650

The Siemens 3RH1921-1LA11 is a robust and reliable Auxiliary Switch Block, designed to enhance the functionality of your motor contactors. With an insulation voltage of 690V, it ensures safe and efficient operation in various industrial environments. This switch block features a snap-on mounting design, making it easy to install and integrate into your existing systems. It comes with 1NO/1NC configuration, providing flexibility in controlling your motor contactors. The compact dimensions of 44 x 51 x 38 mm make it a space-efficient choice for your electrical panels. The Siemens 3RH1921-1LA11 is built to withstand a wide range of ambient temperatures, ensuring reliable performance in diverse operating conditions. With a mechanical operating cycle of 10,000,000, this auxiliary switch block is designed for longevity and consistent performance.

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.

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Learn more about Marvo

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.

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Frequently Asked Questions

What is the voltage rating of this auxiliary switch block?

The Siemens 3RH1921-1LA11 auxiliary switch block has an insulation voltage rating of 690 V.

What is the mounting type for this part?

The Siemens 3RH1921-1LA11 auxiliary switch block is designed for snap-on mounting.

What are the dimensions of this auxiliary switch block?

The dimensions of the Siemens 3RH1921-1LA11 auxiliary switch block are 44 mm in width, 38 mm in height, and 51 mm in depth.

What is the operating temperature range for this part?

The Siemens 3RH1921-1LA11 auxiliary switch block can operate in temperatures ranging from -25°C to +60°C.

What is the contact reliability of this auxiliary switch block?

The Siemens 3RH1921-1LA11 auxiliary switch block has a contact reliability of one incorrect switching operation of 100 million switching operations (17 V, 5 mA).

What is the protection class of this part?

The Siemens 3RH1921-1LA11 auxiliary switch block has a protection class IP20 on the front.

What is the design of the electrical connection for this part?

The Siemens 3RH1921-1LA11 auxiliary switch block has screw-type terminals for auxiliary and control current circuit.

What is the operating current of the auxiliary contacts at AC-12?

The operating current of the auxiliary contacts of the Siemens 3RH1921-1LA11 auxiliary switch block at AC-12 is 10 A at 24 V and 230 V.

Does this part have a mirror contact to IEC 60947-4-1?

Yes, the Siemens 3RH1921-1LA11 auxiliary switch block does have a mirror contact to IEC 60947-4-1.

What is the type of the connectable conductor cross-section for auxiliary contacts?

The Siemens 3RH1921-1LA11 auxiliary switch block can connect to conductor cross-sections of 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²) for auxiliary contacts.

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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