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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RH1921-1FA22 |
| Alternative Part Number | 3RH19211FA22 |
| Manufacturer | Siemens |
| Part Description | This is a Siemens Auxiliary Contact Block with a voltage rating of 690V. It is designed to be attachable, providing flexibility and ease of use in various industrial applications. |
| Country of Origin | Not specified |
| Commodity Code | 85365080 |
The Siemens 3RH1921-1FA22 is a robust and reliable auxiliary contact block, designed to enhance the functionality of your contactor relays and power contactors. This 4-pole attachable block, compliant with DIN EN 50005, features 2 Normally Open (NO) and 2 Normally Closed (NC) contacts, providing versatility for a range of industrial applications.
With an insulation voltage of 690V and a surge voltage resistance of 6kV, this part ensures safe and efficient operation even in demanding environments. The 3RH1921-1FA22 is designed to withstand ambient temperatures ranging from -25°C to +60°C during operation and -55°C to +80°C during storage, making it suitable for use in a wide range of climates.
The part 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. This ensures longevity and reduces the need for frequent replacements, contributing to cost savings in the long run.
The Siemens 3RH1921-1FA22 auxiliary contact block is part of the renowned SIRIUS product range, known for its high-quality and reliable industrial control components. This part is a testament to Siemens' commitment to innovation and excellence in the field of industrial automation.
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Frequently Asked Questions
What is the purpose of this Siemens Auxiliary Contact Block?
The Siemens Auxiliary Contact Block 3RH1921-1FA22 is designed to be used with contactor relays and power contactors. It helps in the control of electrical circuits by providing additional switching contacts.
What are the technical specifications of this Auxiliary Contact Block?
This Auxiliary Contact Block is 4-pole with 2 Normally Open (NO) and 2 Normally Closed (NC) contacts. It has an insulation voltage of 690V and an impulse voltage resistance of 6kV. It operates within an ambient temperature range of -25 to +60 degrees Celsius.
What is the mechanical and electrical endurance of this part?
The Siemens Auxiliary Contact Block 3RH1921-1FA22 has a mechanical service life of approximately 10 million switching cycles and an electrical endurance of about 200,000 switching cycles at AC-15 at 230V.
What is the protection class of this Auxiliary Contact Block?
The Siemens Auxiliary Contact Block 3RH1921-1FA22 has a protection class IP20 on the front, which means it is protected against solid objects larger than 12.5mm but is not protected against liquids.
What is the operating current of the auxiliary contacts?
The operating current of the auxiliary contacts of the Siemens Auxiliary Contact Block 3RH1921-1FA22 at AC-12 is 10A at voltages of 24V, 230V, 400V, and 690V.
What is the contact reliability of this Auxiliary Contact Block?
The Siemens Auxiliary Contact Block 3RH1921-1FA22 has a contact reliability of one incorrect switching operation of 100 million switching operations at 17V, 5mA.
What is the storage temperature range for this part?
The Siemens Auxiliary Contact Block 3RH1921-1FA22 can be stored safely within a temperature range of -55 to +80 degrees Celsius.
