Image shown may not reflect the final product
Check similar products or call us on +44 20 4570 3439 for assistance
1 ready to ship
Image shown may not reflect the final product
Check similar products or call us on +44 20 4570 3439 for assistance
Express delivery
Lightning fast delivery if ordered within 00:00:00
Hassle-free returns
No hidden fees or duties
Swift dispatch and delivery
Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RH1921-1JA11 |
| Manufacturer | Siemens |
| Series | SIRIUS |
| Type | Auxiliary Switch Block |
| Mounting Type | Snap-On Mount |
| Contact Configuration | 1 Normally Open (NO), 1 Normally Closed (NC) |
| Terminal Type | Screw Terminal |
| Rated Operational Voltage | 230 V AC |
| Rated Operational Current | 10 A |
| Protection Class (Front) | IP20 |
| Ambient Temperature (Operation) | -25°C to +60°C |
| Ambient Temperature (Storage) | -55°C to +80°C |
| Mechanical Service Life | 10,000,000 switching cycles |
| Electrical Endurance (AC-15, 230 V) | 200,000 switching cycles |
| Insulation Voltage | 500 V |
| Surge Voltage Resistance | 6 kV |
| Dimensions (W x H x D) | 10 mm x 80 mm x 71 mm |
| Suitable For | Contactor relay and power contactor |
| Contact Reliability | 1 faulty switching per 100 million operations (17 V, 1 mA) |
| Product Function | Mirror contact according to IEC 60947-4-1 (with 3RT1) |
| Conductor Cross-Sections (Auxiliary) | Finely stranded: 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²); AWG: 2x (20 ... 16), 2x (18 ... 14) |
| Application | Designed for use with Siemens 3RT1 contactors, this auxiliary switch block provides reliable auxiliary contact functions for various industrial applications. The snap-on mounting and screw terminals ensure easy installation and secure connections. The unit is built to withstand demanding environments with a high mechanical service life and robust electrical endurance. Ideal for enhancing the functionality of contactor relays and power contactors in automation systems. |
The Siemens 3RH1921-1JA11 is a high-quality auxiliary switch block designed for use with contactors in the SIRIUS series. This versatile component features one normally open (NO) and one normally closed (NC) contact, making it suitable for a variety of industrial applications. With a robust snap-on mounting system, it ensures easy and secure installation.
Engineered to meet the demanding requirements of modern electrical systems, the 3RH1921-1JA11 offers reliable performance with a mechanical service life of up to 10 million switching cycles. It operates efficiently within a wide ambient temperature range of -25°C to +60°C, ensuring durability in diverse environmental conditions.
The auxiliary switch block is rated for a maximum operational current of 10A at both 24V and 230V AC, and it provides excellent contact reliability with a fault rate of just one incorrect switching operation per 100 million operations. The unit is protected to IP20 standards, ensuring safe and reliable operation in industrial settings.
Measuring 10mm in width, 80mm in height, and 71mm in depth, the Siemens 3RH1921-1JA11 is compact yet powerful, making it an ideal choice for enhancing the functionality of your contactor systems.
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.
Read more...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.
Read more...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.
Read more...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.
Read more...How do I create an account?
Creating an account is incredibly simple and takes a matter of seconds. You can create a Marvo account at any time by clicking here and following the simple steps on screen. By creating a Marvo account you can store your contact details, delivery addresses, billing addresses and more, meaning that you can enjoy game-changing convenience faster than ever before.
Read more...Peace of mind with every purchase
Julien
‘Perfect quick delivery, good service.’
Thomas Roland Geaughan
‘Prompt and expert service. Ease of access to find the parts I needed.’
Martin Juřica
‘Fast offer, short delivery time.’
Milan Kosík
‘Large selection of spare parts, fast delivery.’
Kayden
‘Services is great.’
Nathalie Jolicoeur
‘Great service. Thank you.’
Blažej Knežo
‘Quick response and fast delivery of the product.’
Andreas Boehm
‘Excellent service. The right gear and the right price,well packed and delivered on time.’
Milan Kosík
‘Large selection of spare parts, fast delivery.’
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 primary function of this auxiliary switch block?
The primary function of this auxiliary switch block is to provide additional switching capabilities for contactors, specifically for the Siemens 3RT1 series.
What type of contacts does this auxiliary switch block have?
This auxiliary switch block features one normally open (NO) and one normally closed (NC) contact.
What is the rated operational current for the auxiliary contacts at 230 V AC?
The rated operational current for the auxiliary contacts at 230 V AC is 10 A.
What is the protection class of this auxiliary switch block?
The protection class of this auxiliary switch block is IP20.
What are the dimensions of this auxiliary switch block?
The dimensions of this auxiliary switch block are 10 mm in width, 80 mm in height, and 71 mm in depth.
What is the mechanical service life of this auxiliary switch block?
The mechanical service life of this auxiliary switch block is approximately 10 million switching cycles.
What is the electrical endurance of this auxiliary switch block at AC-15 at 230 V?
The electrical endurance of this auxiliary switch block at AC-15 at 230 V is approximately 200,000 switching cycles.
What type of mounting does this auxiliary switch block use?
This auxiliary switch block uses snap-on mounting.
What is the rated insulation voltage for this auxiliary switch block?
The rated insulation voltage for this auxiliary switch block is 500 V with a degree of pollution 3.
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.
What is the ambient operating temperature range for this auxiliary switch block?
The ambient operating temperature range for this auxiliary switch block is from -25°C to +60°C.
What type of terminals does this auxiliary switch block use?
This auxiliary switch block uses screw-type terminals for electrical connections.
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.
