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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RH1921-1FA22 |
| Alternative Part Number | 3RH19211FA22 |
| Manufacturer | Siemens |
| Part Description | This is an auxiliary contact block from Siemens, with a configuration of 2 Normally Open (NO) and 2 Normally Closed (NC) contacts. It operates at a voltage of up to 690V. |
| Short Description | This is an attachable, 4-pole block with 2 NO and 2 NC contacts, conforming to EN 50005 standards. Please note that this product has been phased out and its successor is the SIRIUS 3RH2 series. |
| Commodity Code | 85365080 |
| Country of Origin | Not specified |
| Part Category | Not specified |
| Part Family | Not specified |
The Siemens 3RH1921-1FA22 is a robust and reliable auxiliary contact block designed for industrial applications. This 4-pole attachable block features 2 Normally Open (NO) and 2 Normally Closed (NC) contacts, conforming to EN 50005 standards. It's part of the renowned SIRIUS product line, known for its high-quality and performance.
This part is designed to withstand a wide range of ambient temperatures, from -25°C to +60°C during operation and -55°C to +80°C during storage. It boasts an impressive mechanical service life of 10 million switching cycles and an electrical endurance of 200,000 switching cycles at AC-15 at 230V.
The 3RH1921-1FA22 is equipped with an insulation voltage of 690V with a degree of pollution 3 and a surge voltage resistance rated value of 6kV. It also offers a high level of contact reliability, with only one incorrect switching operation of 100 million switching operations (17V, 5mA).
Please note that this product has been phased out and its successor is the SIRIUS 3RH2. Despite this, the 3RH1921-1FA22 remains a popular choice for many due to its proven reliability and performance. It's an excellent choice for those in need of a dependable auxiliary contact block for their contactor relay and power contactor applications.
Commonly Asked Questions
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Frequently Asked Questions
What is the function of this Siemens Auxiliary Contact Block?
The Siemens Auxiliary Contact Block 3RH1921-1FA22 is an attachable block that is used in industrial control systems. It has 4 poles, 2 Normally Open (NO) and 2 Normally Closed (NC) contacts. It is designed to work with contactor relays and power contactors.
What are the technical specifications of this part?
This part operates with an insulation voltage of 690V and has a surge voltage resistance of 6kV. It can operate in temperatures ranging from -25 to +60 degrees Celsius and can be stored in temperatures from -55 to +80 degrees Celsius. It has a mechanical service life of 10 million switching cycles and an electrical endurance of 200,000 switching cycles at AC-15 at 230V.
What is the protection class of this part?
The Siemens Auxiliary Contact Block 3RH1921-1FA22 has a protection class IP20 on the front. This means it is protected against solid objects larger than 12.5mm but is not protected against liquids.
What is the product brand name of this part?
The product brand name of this part is SIRIUS.
What is the suitability for use of this part?
This part is suitable for use with contactor relay and power contactor.
What is the contact reliability of this part?
The contact reliability of the Siemens Auxiliary Contact Block 3RH1921-1FA22 is one incorrect switching operation of 100 million switching operations (17 V, 5 mA). The contact reliability of the auxiliary contacts is 1 faulty switching per 100 million (17 V, 1 mA).
