steve
Got hold of Sime for a Carrier card for…
Got hold of Sime for a Carrier card for a chiller. Machine down in a factory. Received the new card in express time machine and plant now up and running fantastic service form Sime
3 months ago
3RH1921-1FA40
Siemens 3RH1921-1FA40 available at EU Automation. Get in touch today for a quick price.
Based on over 4900 reviews
Full 12-month warranty
Available for dispatch immediately
We deliver worldwide
What happens next?
1. Email confirmation
You will get an email confirming that we have received your enquiry.
2. Dedicated Account Manager
One of our team will be in touch to confirm your part(s) specification and condition.
3. Your quote
You will receive a comprehensive quote tailored to your specific needs.
All orders are subject to product availability. See our T&Cs.
Ask our team
What happens next?
1. Email confirmation
You will get an email confirming that we have received your enquiry.
2. Dedicated Account Manager
One of our team will be in touch to confirm your part(s) specification and condition.
3. Your quote
You will receive a comprehensive quote tailored to your specific needs.
The Siemens 3RH1921-1FA40 is a high-quality auxiliary contact block designed for seamless integration with contactor relays and power contactors. This attachable block is 4-pole and features 4 normally open (NO) contacts, providing reliable and efficient operation in various industrial applications. With a compact size of 44 x 51 x 38 mm and a weight of just 0.066 kg, it is easy to install and does not add significant bulk to your system. The part is designed for snap-on mounting, ensuring a secure fit and easy installation. It features screw-type terminals for auxiliary and control current circuits, accommodating a range of conductor cross-sections. The 3RH1921-1FA40 is designed to withstand ambient temperatures from -25 to +60 degrees Celsius during operation and -55 to +80 degrees Celsius during storage, ensuring reliable performance in a wide range of environments. This part is a testament to Siemens' commitment to quality, durability, and performance in industrial automation.
| Specification | Description |
|---|---|
| Part Number | 3RH1921-1FA40 |
| Alternative Part Number | 3RH19211FA40 |
| Manufacturer | Siemens |
| Part Description | This is an attachable block designed for use with contactor relays and power contactors. It measures 44 x 51 x 38 mm and weighs 0.066 kg. |
| Short Description | Auxiliary Contact Block |
| Country of Origin | Not specified |
| Commodity Code | 853650 |
| Dimensions | 44 x 51 x 38 mm |
| Weight | 0.066 kg |
| Protection Class IP | IP20 |
| Ambient Temperature (Storage) | -55 to +80 °C |
| Ambient Temperature (Operating) | -25 to +60 °C |
| Mechanical Operating Cycles | Typical 10,000,000 |
| Electrical Operating Cycles | Typical 200,000 at AC-15 at 230 V |
| Contact Reliability | One incorrect switching operation of 100 million switching operations (17 V, 5 mA) |
| Auxiliary Circuit | Number of NO contacts for auxiliary contacts: 4 (instantaneous switching) |
| Operating Current | 10 A at 24 V, 230 V, 400 V, 690 V (maximum) for the auxiliary contacts at AC-12 |
| Insulation Voltage | Rated value 690 V with degree of pollution 3 |
| Impulse Voltage Resistance | Rated value 6 kV |
What is the size of this Auxiliary Contact Block?
The dimensions of this Auxiliary Contact Block are 44 x 51 x 38 mm.
What is the weight of this part?
The weight of the Siemens 3RH1921-1FA40 is 0.066 kg.
What is the protection class of this part?
The Siemens 3RH1921-1FA40 has a protection class IP20 on the front.
What is the operating temperature range of this part?
The Siemens 3RH1921-1FA40 can operate between -25 to +60 degrees Celsius.
What is the storage temperature range of this part?
The Siemens 3RH1921-1FA40 can be stored between -55 to +80 degrees Celsius.
What is the mechanical service life of this part?
The Siemens 3RH1921-1FA40 has a typical mechanical service life of 10,000,000 switching cycles.
What is the electrical endurance of this part?
The Siemens 3RH1921-1FA40 has an electrical endurance of 200,000 switching cycles at AC-15 at 230 V.
What is the insulation voltage of this part?
The Siemens 3RH1921-1FA40 has an insulation voltage of 690 V with degree of pollution 3.
What is the surge voltage resistance of this part?
The Siemens 3RH1921-1FA40 has a surge voltage resistance of 6 kV.
How many NC contacts does this part have?
The Siemens 3RH1921-1FA40 has 0 NC contacts for auxiliary contacts.
How many NO contacts does this part have?
The Siemens 3RH1921-1FA40 has 4 NO contacts for auxiliary contacts.
- Used in industrial automation systems for controlling power circuits
- Commonly utilized in motor control centers for switching and controlling motors
- Often found in control panels for managing electrical circuits
- Used in manufacturing plants for controlling machinery operations
- Frequently used in HVAC systems for controlling heating, ventilation, and air conditioning units
- Utilized in conveyor systems for managing the operation of conveyor belts
- Used in pumping stations for controlling the operation of pumps
- Commonly used in lighting systems for managing the operation of lights
- Often used in power distribution systems for controlling the flow of electricity
- Utilized in safety systems for managing emergency stop circuits.
This content has been produced using multiple sources. EU Automation takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
Delivery
- Logistic partners UPS, FedEx and DHL
- International delivery available
- Premium nine hour delivery service available to anywhere in Europe
- Same day dispatch from group stock
Warranty
All parts new or reconditioned are covered by EU Automation 12 month warranty
Returns
No hassle returns policy
Dedicated customer support team
Payment
Trade CreditWe understand that credit is a necessary part of business and offer credit agreements on request, subject to status.
Payment optionsWe accept Bank transfers and the following methods of payment:
All transactions are handled securely by HSBC and HSBC Merchant Services. For more information, please visit our dedicated payments page.
Services
Sourcing your part
Global supplier of quality automation and control components
Service Exchange
Dispose of your old unit by exchanging it for a working part.
Repair
A comprehensive repair service for faulty equipment.
Customer reviews
steve
Daniel
Excellent customer service...
Alex Bailey is my main point of contact at EU Automation...he is extremely friendly, has exceptional customer service skills and always offers great pricing & lead times.
5 months ago
Jerry Schrink
Tom Higgins provided amazing service
Tom Higgins provided great prompt service. I contacted Tom by phone and within 10 minutes there was a quote in my in box. WOW Thank you Tom and Thank you EU Automation!
5 months ago
Paulo Pereira
Excellent service and communication…
Excellent service and communication from Alex Bailey. He truly goes above and beyond to ensure his clients are 100% satisfied. The entire process was seamless, and his attention to detail made a huge difference. Highly recommended for anyone looking for amazing service!
5 months ago
Gary
Tom Higgins did a great job at getting…
Tom Higgins did a great job at getting us the part we needed. He saw a concern with the part a verified before shipping.
5 months ago
Lessle Smith
Thomas Higgins has gone above and…
Thomas Higgins has gone above and beyond to make things happen for my facility. His customer service and knowledge were an asset in helping me with my order and the logistics challenges!
6 months ago
Be a Factory Hero.
Get parts fast.
You don’t need tights and a cape to be a hero.
Get parts fast and feel like a legend, just like Jeff.