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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RH2911-1FA22 |
| Alternative Part Number | 3RH29111FA22 |
| Manufacturer | Siemens |
| Rated Insulation Voltage | 690 V ac |
| Rated Operational Voltage | 600 V dc |
| Number of Contacts | 4 (2NO/2NC) |
| Contact Configuration | Snap-On |
| Mechanical Service Life | Typical 10,000,000 switching cycles |
| Electrical Endurance | Typical 200,000 switching cycles at AC-15, 230 V |
| Contact Reliability | 1 faulty switching per 100 million (17 V, 1 mA) |
| Surge Voltage Resistance | Rated value 6 kV |
| Protection Class | IP20 on the front |
| Ambient Operating Temperature Range | -25 ... +60 °C during operation, -55 ... +80 °C during storage |
| Suitability for Use | Contactor relay and power contactor |
| Terminal Type | Screw terminal |
| Commodity Code | 85365080 |
The Siemens 3RH2911-1FA22 is a meticulously engineered auxiliary switch designed to enhance the functionality of contactor relays and power contactors. This switch is a vital component for industrial control systems, offering a reliable solution for various switching operations. With a configuration of 2NO/2NC (2 Normally Open and 2 Normally Closed) contacts, it provides flexibility for a wide range of circuit designs.
Crafted for durability, the 3RH2911-1FA22 boasts an impressive mechanical service life, capable of up to 10 million switching cycles, ensuring longevity and consistent performance in demanding industrial environments. Its electrical endurance is equally robust, with a typical rating of 200,000 switching cycles at AC-15 at 230V.
The switch operates efficiently within a broad ambient temperature range, from -25°C to +60°C during operation, and can withstand storage temperatures from -55°C to +80°C, making it suitable for various climatic conditions. The unit is designed with a protection class of IP20 on the front, safeguarding the internal components from solid objects larger than 12.5mm.
With an insulation voltage rated at 690V and a surge voltage resistance of 6kV, the 3RH2911-1FA22 ensures safe and reliable isolation between the power and auxiliary circuits. The switch's contact reliability is exceptional, with a low probability of faulty switching, thus providing peace of mind for critical applications.
The compact and intuitive design allows for snap-on mounting, facilitating easy installation and maintenance. The screw-type terminals provide a secure and straightforward connection for auxiliary and control current circuits.
In summary, the Siemens 3RH2911-1FA22 auxiliary switch is a versatile and dependable choice for enhancing control systems, offering both reliability and ease of use for industrial applications.
Commonly Asked Questions
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Frequently Asked Questions
What type of device is the Siemens Auxiliary Switch?
The Siemens Auxiliary Switch is an electrical component used for switching and signalling functions in various control and automation systems. It is designed to be mounted on the front of contactor relays and power contactors.
What are the voltage ratings for this auxiliary switch?
This auxiliary switch is rated for 690 V ac and 600 V dc, making it suitable for a wide range of industrial applications.
How many contacts does the auxiliary switch have?
The auxiliary switch comes with 2 Normally Open (NO) and 2 Normally Closed (NC) contacts, providing flexibility for different circuit configurations.
Can this auxiliary switch be used with both AC and DC circuits?
Yes, the auxiliary switch is designed to work with both AC and DC circuits, with the appropriate voltage ratings for each.
What is the mechanical service life of the auxiliary switch?
The mechanical service life of the auxiliary switch is typically around 10 million switching cycles, indicating its durability and longevity in operation.
What is the electrical endurance of the auxiliary switch?
The electrical endurance of the auxiliary switch is typically 200,000 switching cycles at AC-15 at 230 V, which demonstrates its reliability over time.
What is the insulation voltage of the auxiliary switch?
The insulation voltage of the auxiliary switch, with a degree of pollution 3, is rated at 690 V.
What is the surge voltage resistance of this switch?
The surge voltage resistance of the auxiliary switch is rated at 6 kV.
What type of terminals does the auxiliary switch have for connection?
The auxiliary switch features screw-type terminals for secure and reliable electrical connections.
Is the auxiliary switch suitable for use in contactor relays and power contactors?
Yes, the auxiliary switch is specifically designed for use with contactor relays and power contactors, enhancing their functionality and control capabilities.
Part conditions explained
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