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Siemens 3RH1911-1HA31

Name: 3RH1911-1HA31
Brand: Siemens
SKU: 3RH1911-1HA31
Price: 33.74 GBP
Availability: InStock

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£33.74 (ex. VAT)

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Marvo Stock ID MV-7C70

HS Code 85365080

SKU 3RH1911-1HA31

Condition New unboxed

Warranty 12 months

Weight (kg) 0.03

Length (mm) 41.50

Width (mm) 36.50

Height (mm) 37.50

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Specification & Description

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Specification & Description

Specification	Description
Part Number	3RH1911-1HA31
Alternative Part Number	3RH19111HA31
Manufacturer	Siemens
Product Type	Auxiliary Switch Block
Contact Configuration	3 Normally Open (NO), 1 Normally Closed (NC)
Connection Type	Screw Connection
Suitable For	Motor Contactors, 4-Pole
Protection Class IP	IP20
Ambient Operating Temperature Range	-25°C to +60°C (Operating), -55°C to +80°C (Storage)
Mechanical Operating Cycles	Typically 10,000,000
Electrical Operating Cycles at AC-15	Typically 200,000 at 230V
Contact Reliability	1 faulty switching per 100 million (17 V, 1 mA)
Insulation Voltage	Rated at 690V with degree of pollution 3
Impulse Voltage Resistance	Rated at 6kV
Mounting Type	Snap-on Mounting
Dimensions (W x H x D)	36.5 mm x 37.5 mm x 41.5 mm
Connection Cross-Section	2x (0.5 ... 1.5 mm²) finely stranded with conductor end processing, 2x (20 ... 14) AWG conductors
Safety Features	Mirror contact to IEC 60947-4-1, Positively driven operation to IEC 60947-5-1
Commodity Code	853650

The Siemens 3RH1911-1HA31 is a high-quality auxiliary switch block designed to enhance the functionality of motor contactors. This component is engineered to facilitate both contactor relay and power contactor applications, ensuring reliable and efficient operation within a wide range of industrial settings.

Crafted with a robust screw connection, the 3RH1911-1HA31 features a configuration of 3 normally open (NO) and 1 normally closed (NC) contacts, conforming to the DIN EN50012 standard. This makes it a versatile choice for various control and signalling circuits. The switch block is rated for an insulation voltage of 690V and has an impulse voltage resistance of 6kV, highlighting its capability to withstand challenging electrical environments.

The auxiliary switch block is designed for snap-on mounting, which allows for quick and easy installation onto compatible devices. With dimensions of 36.5mm in width, 37.5mm in height, and 41.5mm in depth, it is compact enough to fit into tight spaces while still providing easy access for maintenance.

In terms of performance, the 3RH1911-1HA31 boasts a mechanical operating cycle of typically 10 million operations and an electrical operating cycle of 200,000 at AC-15, at 230V. This demonstrates the switch block's durability and long service life, making it a reliable choice for continuous use.

The auxiliary switch block operates effectively within an ambient temperature range of -25°C to +60°C, ensuring consistent performance even in varying climatic conditions. Its IP20 protection class rating on the front indicates a basic level of protection against solid objects, making it suitable for use in controlled environments.

Overall, the Siemens 3RH1911-1HA31 auxiliary switch block is a dependable and practical component for enhancing control systems in industrial applications. Its robust design, combined with its technical capabilities, makes it a valuable addition to any setup requiring precise and durable switching solutions.

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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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 function of an auxiliary switch block?

An auxiliary switch block is used to provide additional control, signalling, and interlocking functions in conjunction with contactors and relays. It typically includes multiple sets of contacts that can be configured as normally open (NO) or normally closed (NC) to suit various control circuit requirements.

Can this auxiliary switch block be used with any contactor?

The 3RH1911-1HA31 is designed to be compatible with specific Siemens motor contactors. It's important to check the compatibility with your contactor model to ensure proper fit and function.

How many contacts does this auxiliary switch block have?

The auxiliary switch block has a configuration of 3 normally open (NO) contacts and 1 normally closed (NC) contact.

What are the electrical operating cycles of this auxiliary switch block?

The auxiliary switch block is rated for typically 200,000 electrical operating cycles at AC-15, at 230 V.

What type of connection does the auxiliary switch block use?

This auxiliary switch block uses screw-type terminals for secure and reliable electrical connections.

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

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

What are the dimensions of the auxiliary switch block?

The dimensions of the auxiliary switch block are 36.5 mm in width, 37.5 mm in height, and 41.5 mm in depth.

How is the auxiliary switch block mounted?

The auxiliary switch block is designed for snap-on mounting, making it easy to install or remove from a contactor.

Does the auxiliary switch block have a mirror contact function?

Yes, the auxiliary switch block has a mirror contact function according to IEC 60947-4-1, which is important for safety applications.

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

The auxiliary switch block can operate within an ambient temperature range of -25 °C to +60 °C.

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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