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Siemens 3RH2911-1GA31

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£42.64 (ex. VAT)

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Marvo Stock ID MV-298K
HS Code 85365080
SKU 3RH2911-1GA31
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

Specification Description
Part Number 3RH2911-1GA31
Alternative Part Number 3RH29111GA31
Manufacturer Siemens
Series SIRIUS
Type Auxiliary Switch Block
Mounting Snap-On Mount
Number of Contacts 3 Normally Open (NO), 1 Normally Closed (NC)
Current Path 1 NO, 1 NC, 1 NO, 1 NO
Rated Operational Voltage 230 V ac
Rated Operational Current 10 A
Protection Class IP20
Dimensions 36 x 43.7 x 37.5 mm
Ambient Operating Temperature -25 … +60 °C
Storage Temperature -55 … +80 °C
Mechanical Operating Cycles Typically 10,000,000
Electrical Operating Cycles At AC-15, at 230 V: Typically 200,000
Contact Reliability 1 faulty switching per 100 million (17 V, 1 mA)
Insulation Voltage Rated value 690 V with degree of pollution 3
Impulse Voltage Resistance Rated value 6 kV
Electrical Connection Screw-type terminals
Conductor Cross-section Solid: 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²) Finely stranded with conductor end processing: 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
AWG Conductors For auxiliary contacts: 2x (20 ... 16), 2x (18 ... 14)
Positively Driven Operation Yes, with 3RH2 contactor relays
Commodity Code 853650

The Siemens 3RH2911-1GA31 is a high-quality auxiliary switch block designed to enhance the functionality of contactor relays. This component is part of the esteemed SIRIUS series and is engineered to provide reliable switching operations in a variety of industrial applications. With a configuration of 3 normally open (NO) and 1 normally closed (NC) contacts, it offers flexibility for integrating into control circuits.

Crafted for snap-on mounting, this auxiliary switch block is straightforward to install and boasts a compact design with dimensions of 36 x 43.7 x 37.5 mm, ensuring it does not require excessive space within your equipment. The screw terminals provide a secure and durable connection, making it suitable for rigorous industrial environments.

The switch block operates efficiently within an ambient temperature range of -25 to +60 degrees Celsius, ensuring consistent performance even in demanding conditions. It has an impressive mechanical operating life of approximately 10 million cycles and an electrical operating life at AC-15 at 230 V of around 200,000 cycles, highlighting its durability and longevity.

With an insulation voltage rated at 690 V and an impulse voltage resistance of 6 kV, the 3RH2911-1GA31 ensures a high level of electrical insulation and protection against voltage spikes. Its IP20 protection class rating on the front indicates that it is protected against solid objects larger than 12.5 mm, although it should be housed within a suitable enclosure for optimal protection.

This auxiliary switch block is a reliable choice for those seeking to enhance their control systems with a component that offers both versatility and robust 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.

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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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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 series does this auxiliary switch block belong to?

This auxiliary switch block is part of the SIRIUS series.

Can you describe the mounting method for this auxiliary switch block?

The auxiliary switch block is designed for snap-on mounting, making it easy to install onto the front of contactor relays.

What is the protection class of this auxiliary switch block?

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

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

The ambient temperature range for storage is -55 to +80 degrees Celsius, and for operating, it is -25 to +60 degrees Celsius.

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

The mechanical service life of this auxiliary switch block is typically around 10 million switching cycles.

What is the electrical endurance of this auxiliary switch block at AC-15, 230 V?

At AC-15, 230 V, the electrical endurance is typically 200,000 switching cycles.

How reliable are the contacts in this auxiliary switch block?

The contacts in this auxiliary switch block are highly reliable, with a contact reliability of 1 faulty switching per 100 million operations at 17 V, 1 mA.

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 impulse voltage resistance of this auxiliary switch block?

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

What is the configuration of the contacts in this auxiliary switch block?

The auxiliary switch block features 3 normally open (NO) contacts and 1 normally closed (NC) contact.

What is the operational current rating for the auxiliary contacts at AC-12?

The operational current rating for the auxiliary contacts at AC-12 is 10 A for both 24 V and 230 V.

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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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