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Siemens 3RH2911-1FB11

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£43.28 (ex. VAT)

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3RH2911-1FB11

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Marvo Stock ID MV-7CEU
HS Code 8536
SKU 3RH2911-1FB11
Condition New unboxed
Warranty 12 months
Weight (kg) 0.04
Length (mm) 43.70
Width (mm) 36.00
Height (mm) 37.50

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Specification & Description

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Specification & Description

Specification Description
Part Number 3RH2911-1FB11
Alternative Part Number 3RH29111FB11
Manufacturer Siemens
Product Brand Name SIRIUS
Suitability for Use Contactor relay and power contactor
Protection Class IP IP20 on the front
Ambient Temperature -25 … +60 °C during operation, -55 … +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 One incorrect switching operation of 100 million switching operations (17 V, 1 mA)
Insulation Voltage Rated value of 690 V with degree of pollution 3
Impulse Voltage Resistance Rated value of 6 kV
Mounting Type Snap-on mounting
Dimensions Width: 36 mm, Height: 37.5 mm, Depth: 43.7 mm
Electrical Connection Screw-type terminals for auxiliary and control current circuit
Connectable Conductor Cross-sections For auxiliary contacts: 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²) solid and finely stranded
AWG Conductors For auxiliary contacts: 2x (20 ... 16), 2x (18 ... 14)
Product Functions Does not have mirror contact acc. to IEC 60947-4-1 or positively driven operation acc. to IEC 60947-5-1

The Siemens 3RH2911-1FB11 is a high-quality auxiliary switch block designed to enhance the functionality of contactor relays and power contactors. This component is part of the esteemed SIRIUS product line, renowned for its reliability and versatility in various industrial applications. The switch block features a front-mounted design, providing easy access and straightforward installation.

Equipped with one normally open (NO) and one normally closed (NC) contact, the 3RH2911-1FB11 offers flexibility for controlling electrical circuits. The robust construction ensures a mechanical service life of typically 10 million switching cycles, making it a durable choice for repetitive operations. With an electrical endurance of 200,000 switching cycles at AC-15 at 230 V, this auxiliary switch block is built to last even in demanding conditions.

The unit is rated for an insulation voltage of 690 V with a degree of pollution 3, and it can withstand impulse voltages up to 6 kV, ensuring it can handle surges and maintain circuit integrity. The switch block operates reliably within an ambient temperature range of -25 to +60 °C, making it suitable for a wide range of environments.

With a protection class of IP20 on the front, the 3RH2911-1FB11 is designed to prevent the ingress of solid objects, adding an extra layer of protection for the internal components. The compact dimensions, featuring a width of 36 mm, a height of 37.5 mm, and a depth of 43.7 mm, allow for efficient use of space inside control cabinets.

The screw-type terminals provide a secure and reliable electrical connection for auxiliary and control current circuits, accommodating various conductor cross-sections for flexible wiring options. This auxiliary switch block does not have mirror contact or positively driven operation according to IEC standards, which should be considered when integrating into safety-related applications.

Overall, the Siemens 3RH2911-1FB11 auxiliary switch block is a dependable and practical solution for enhancing control systems, offering consistent performance and ease of use for engineers and technicians in the UK and beyond.

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.

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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 function of this auxiliary switch block?

The auxiliary switch block is designed to be snapped onto the front side of contactor relays and power contactors. It provides additional switching capabilities, typically for signalling and interlocking purposes, with 1 normally open (NO) and 1 normally closed (NC) contact.

Can this auxiliary switch block be used with any size of contactor?

This auxiliary switch block is suitable for use with size S00 and S0 contactor relays and power contactors, ensuring compatibility with specific models within this size range.

What is the protection class of this auxiliary switch block?

The protection class for the front side of this auxiliary switch block is IP20, indicating a basic level of protection against solid objects.

What are the ambient temperature limits for operating this auxiliary switch block?

The auxiliary switch block can operate within an ambient temperature range of -25 to +60 degrees Celsius, ensuring reliable performance within these limits.

What is the mechanical service life of this auxiliary switch block?

The mechanical service life of the auxiliary switch block is typically 10 million switching cycles, highlighting its durability and longevity.

How does the electrical endurance of this auxiliary switch block compare?

The electrical endurance of the auxiliary switch block is rated at 200,000 switching cycles at AC-15 at 230 V, which is typical for devices of this nature.

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

The insulation voltage rating for this auxiliary switch block, with a degree of pollution 3, is 690 V.

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 the auxiliary switch block mounted?

The auxiliary switch block is designed for snap-on mounting, allowing for easy and secure attachment to the front of compatible contactors.

What type of electrical connection does this auxiliary switch block use?

This auxiliary switch block utilises screw-type terminals for its electrical connections, providing a reliable and secure method for wiring.

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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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