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3RH2122-2KB40
Siemens 3RH2122-2KB40 available at EU Automation. Get in touch today for a quick price.
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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 3RH2122-2KB40 is a coupling contactor relay designed for reliable and efficient operation in various industrial applications. This robust part is known for its high mechanical operating cycles, with the contactor capable of a typical 30,000,000 operations. It features an auxiliary switch block that can handle an impressive 10,000,000 operations, and when paired with an electronics-compatible auxiliary switch block, it can manage up to 5,000,000 operations.
The 3RH2122-2KB40 operates with a DC control feed voltage and includes a suppressor diode for surge protection. Its control supply voltage for DC is rated at 24V, and it has an operating range factor control supply voltage rated value of the magnet coil for DC between 0.7 and 1.25. The holding power of the solenoid for DC is 4W, and the pull-in power is 13W.
This Siemens relay also features a closing delay of 30 to 100ms at DC and an opening delay of 25 to 90ms at DC, with an arcing time of 10 to 15 seconds. The auxiliary circuit of the 3RH2122-2KB40 includes one NC contact and two NO contacts for auxiliary contacts with instantaneous switching.
Designed for durability and performance, the Siemens 3RH2122-2KB40 coupling contactor relay is an excellent choice for your industrial control needs.
The 3RH2122-2KB40 operates with a DC control feed voltage and includes a suppressor diode for surge protection. Its control supply voltage for DC is rated at 24V, and it has an operating range factor control supply voltage rated value of the magnet coil for DC between 0.7 and 1.25. The holding power of the solenoid for DC is 4W, and the pull-in power is 13W.
This Siemens relay also features a closing delay of 30 to 100ms at DC and an opening delay of 25 to 90ms at DC, with an arcing time of 10 to 15 seconds. The auxiliary circuit of the 3RH2122-2KB40 includes one NC contact and two NO contacts for auxiliary contacts with instantaneous switching.
Designed for durability and performance, the Siemens 3RH2122-2KB40 coupling contactor relay is an excellent choice for your industrial control needs.
| Specification | Description |
|---|---|
| Part Number | 3RH2122-2KB40 |
| Alternative Part Number | 3RH21222KB40 |
| Manufacturer | Siemens |
| Part Category | Contactors |
| Short Description | Coupling Contactor Relay |
| Country of Origin | Not Specified |
| Commodity Code | 853649 |
| Functional Safety | Yes, according to IEC 61508 |
| Positively Driven Operation | Yes, according to IEC 60947-5-1 |
| UL/CSA Ratings | A600 / Q600 for auxiliary contacts |
| B10 Value | 1,000,000 with high demand rate |
| Failure Rate | 100 FIT with low demand rate |
| Proportion of Dangerous Failures | 40% with low demand rate, 73% with high demand rate |
| T1 Value | 20 for proof test interval or service life |
What is the function of this Siemens coupling contactor relay?
This Siemens coupling contactor relay is designed to control electrical loads in industrial and commercial applications. It is particularly useful in situations where it is necessary to control a circuit by a separate low-power signal, or where several circuits must be controlled by one signal.
What are the key features of this coupling contactor relay?
This coupling contactor relay features 2 normally open (NO) and 1 normally closed (NC) contacts. It operates with a DC control supply voltage of 24V and has an integrated suppressor diode. It also has a high shock resistance and can operate in a wide range of ambient temperatures.
What is the significance of the integrated suppressor diode in this relay?
The integrated suppressor diode in this relay is designed to protect the relay from voltage spikes that can occur when the relay coil is de-energized. This helps to prolong the life of the relay and ensure reliable operation.
What is the operating temperature range for this relay?
This relay can operate in a wide range of ambient temperatures, from -40°C to +70°C. This makes it suitable for use in a variety of environments.
What is the insulation voltage of this relay?
The insulation voltage of this relay, with a degree of pollution 3, is rated at 690V.
What is the significance of the 'positively driven operation' feature mentioned in the datasheet?
The 'positively driven operation' feature of this relay, as per IEC 60947-5-1, ensures that the normally open (NO) and normally closed (NC) contacts cannot be in the same state at the same time. This is a safety feature that prevents dangerous situations like short circuits.
What is the installation altitude for this relay?
The maximum installation altitude for this relay is 2000 meters above sea level.
- Used in industrial automation systems for controlling and switching electrical circuits.
- Commonly utilized in railway applications due to its robust design and high shock resistance.
- Often integrated into control panels for machinery and equipment to manage auxiliary circuits.
- Frequently employed in safety-related applications due to its positively driven operation.
- Suitable for use in environments with a high degree of pollution, thanks to its IP20 protection rating.
- Ideal for applications requiring a high number of mechanical operating cycles.
- Used in systems that require a high insulation voltage, with a rated value of 690V.
- Appropriate for use in systems operating in a wide range of ambient temperatures, from -40°C to +70°C.
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.
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