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Siemens 3RH1911-2FA20

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3RH1911-2FA20

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Marvo Stock ID MV-7C79
HS Code 85365080
SKU 3RH1911-2FA20
Condition New unboxed
Warranty 12 months
Weight (kg) 0.02
Length (mm) 46.00
Width (mm) 36.50
Height (mm) 37.50

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Specification & Description

Specification Description
Part Number 3RH1911-2FA20
Alternative Part Number 3RH19112FA20
Manufacturer Siemens
Product Type Auxiliary Switch Block
Suitable Applications Contactor relays and power contactors for switching motors
Size S00
Connection Type Cage clamp connection
Number of NO Contacts 2 instantaneous switching
Number of NC Contacts 0 instantaneous switching
Operating Current for Auxiliary Contacts at AC-12 10 A at 24 V and 230 V, maximum 10 A
Operating Current for Auxiliary Contacts at AC-15 6 A at 24 V and 230 V, 3 A at 400 V, 1 A at 690 V
Operating Current for Auxiliary Contacts at DC-13 6 A at 24 V, 2 A at 60 V, 1 A at 110 V, 0.3 A at 220 V
Insulation Voltage Rated at 690 V with degree of pollution 3
Impulse Voltage Resistance Rated at 6 kV
Ambient Operating Temperature Range -25 to +60 °C during operation, -55 to +80 °C during storage
Mechanical Operating Cycles Typically 10,000,000
Electrical Operating Cycles Typically 200,000 at AC-15, at 230 V
Contact Reliability 1 faulty switching per 100 million operations at 17 V, 5 mA
Protection Class IP20 on the front
Mounting Type Snap-on mounting
Dimensions (W x H x D) 36.5 mm x 37.5 mm x 46 mm
Safety Features Mirror contact according to IEC 60947-4-1, positively driven operation according to IEC 60947-5-1
Approvals General Product Approval, Functional Safety, Safety of Machinery, Declaration of Conformity

The Siemens 3RH1911-2FA20 is a high-quality auxiliary switch block designed for seamless integration with contactor relays and motor switches. This component is part of the SIRIUS product family, renowned for its reliability and performance in industrial control applications. With a protection class of IP20, it is suitable for use in a variety of operating environments.

This auxiliary switch block features two normally open (NO) contacts, providing a dependable solution for expanding control circuits. It is engineered to operate within a wide ambient temperature range, from -25°C to +60°C during operation, ensuring consistent performance even in demanding conditions.

The 3RH1911-2FA20 boasts an impressive mechanical operating life of typically 10 million cycles and an electrical operating life of 200,000 cycles at AC-15 at 230V, highlighting its durability and longevity. The contact reliability is exceptional, with a very low chance of incorrect switching operations, ensuring accurate and reliable circuit control.

Installation is made easy with its snap-on mounting design, and the spring-loaded terminals allow for quick and secure electrical connections. The switch block's dimensions are compact, with a width of 36.5mm, height of 37.5mm, and depth of 46mm, making it suitable for space-constrained applications.

The 3RH1911-2FA20 is designed with safety in mind, featuring mirror contacts according to IEC 60947-4-1 and positively driven operation according to IEC 60947-5-1 when used with 3RT1 and 3RH1 respectively.

This auxiliary switch block is a preferred choice for professionals seeking a robust and reliable component for their industrial control systems. Its technical specifications and build quality make it a valuable addition to any setup requiring precise control and long-term dependability.

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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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.

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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.

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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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Frequently Asked Questions

What is the purpose of an auxiliary switch block?

An auxiliary switch block is used to provide additional switching functions in electrical circuits. It can be used for signalling, interlocking, and control tasks within a contactor relay or power contactor setup.

Can the auxiliary switch block be mounted easily?

Yes, the auxiliary switch block is designed for snap-on mounting, which allows for quick and easy installation onto compatible devices.

What type of connections does this auxiliary switch block support?

This auxiliary switch block supports spring-loaded terminals, which are designed for secure and maintenance-free connections.

What is the rated insulation voltage for this auxiliary switch block?

The rated insulation voltage for the 3RH1911-2FA20 auxiliary switch block is 690 volts, with a degree of pollution 3.

What are the operating current specifications for this auxiliary switch block?

The operating current for the auxiliary contacts at AC-12 is 10 amps at both 24 volts and 230 volts, with a maximum of 10 amps.

What is the ambient temperature range for operating this auxiliary switch block?

The ambient temperature range for operating the auxiliary switch block is between -25 degrees Celsius and +60 degrees Celsius.

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

The auxiliary switch block is designed to withstand typically 10 million mechanical operating cycles.

Does this auxiliary switch block have a mirror contact function?

Yes, the auxiliary switch block has a mirror contact function in accordance with IEC 60947-4-1 when used with 3RT1 contactors.

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

The impulse voltage resistance of the auxiliary switch block is rated at 6 kilovolts.

Is the auxiliary switch block equipped with positively driven operation?

Yes, the auxiliary switch block features positively driven operation in accordance with IEC 60947-5-1 when used with 3RH1 contactor relays.

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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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