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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RH2911-2FA22 |
| Alternative Part Number | 3RH29112FA22 |
| Manufacturer | Siemens |
| Product Type | Auxiliary Switch |
| Rated Insulation Voltage | 690 V AC with degree of pollution 3 |
| Rated Operational Voltage | 600 V DC |
| Number of Contacts | 2 Normally Open (NO), 2 Normally Closed (NC) |
| Contact Configuration | Current path: 1NO, 1NC, 1NC, 1NO |
| Mechanical Operating Cycles | Typical 10,000,000 |
| Electrical Operating Cycles | Typical 200,000 at AC-15, at 230 V |
| Contact Reliability | 1 faulty switching per 100 million (17 V, 1 mA) |
| Ambient Operating Temperature Range | -25 to +60 °C during operation, -55 to +80 °C during storage |
| Protection Class | IP20 on the front |
| Mounting Type | Snap-on mounting |
| Dimensions (Width x Height x Depth) | 36 mm x 41.5 mm x 47.7 mm |
| Connection Type | Spring-loaded terminals |
| Suitable for Use With | Contactor relay and power contactor |
| Product Brand Name | SIRIUS |
| Surge Voltage Resistance | Rated value 6 kV |
| Commodity Code | 85365080 |
| Special Features | Mirror contact according to IEC 60947-4-1, Positively driven operation according to IEC 60947-5-1 |
The Siemens 3RH2911-2FA22 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 2 normally open (NO) and 2 normally closed (NC) contacts, it provides flexibility for a wide range of applications.
Constructed to withstand challenging industrial environments, the 3RH2911-2FA22 operates efficiently within an ambient temperature range of -25 to +60 degrees Celsius, ensuring consistent performance even in extreme conditions. The switch boasts an impressive mechanical service life of approximately 10 million switching cycles, highlighting its durability and long-term reliability.
The auxiliary switch is rated for an insulation voltage of 690V, with a surge voltage resistance of 6kV, which is indicative of its robust design and its ability to handle high-voltage applications with ease. The spring-loaded terminals facilitate a secure and straightforward installation process, making it a user-friendly option for professionals.
This Siemens auxiliary switch is not only built to last but also designed with safety in mind, featuring mirror contacts according to IEC 60947-4-1 and positively driven operation in compliance with IEC 60947-5-1. These features ensure that the switch operates safely and predictably, which is crucial for maintaining the integrity of the control system it is part of.
The compact dimensions of the 3RH2911-2FA22, with a width of 36mm, height of 41.5mm, and depth of 47.7mm, allow for efficient use of space within control cabinets, making it an excellent choice for applications where space is at a premium.
Overall, the Siemens 3RH2911-2FA22 auxiliary switch is a testament to Siemens' commitment to quality, reliability, and safety in industrial control components. It is an essential part of any system where precise control and long-term dependability are paramount.
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Frequently Asked Questions
What is the voltage rating for this auxiliary switch?
The auxiliary switch is rated for an insulation voltage of 690 V AC with a degree of pollution 3, and it has an impulse voltage resistance rated at 6 kV.
Can this auxiliary switch be used with both AC and DC circuits?
Yes, the auxiliary switch is suitable for use in both AC and DC circuits. It has operational current ratings specified for AC-12, AC-14, AC-15, and DC-12 categories.
What are the ambient temperature limits for operating this auxiliary switch?
The switch can operate within an ambient temperature range of -25 to +60 degrees Celsius, and it can be stored in temperatures ranging from -55 to +80 degrees Celsius.
What is the mechanical service life of this auxiliary switch?
The mechanical service life of the switch is typically 10 million switching cycles, indicating its durability and longevity in applications.
How many NO and NC contacts does the auxiliary switch have?
The auxiliary switch features 2 Normally Open (NO) and 2 Normally Closed (NC) contacts.
What type of terminals does the auxiliary switch have for connection?
The switch is equipped with spring-loaded terminals, which allow for quick and secure connections.
What is the product brand name associated with this auxiliary switch?
The auxiliary switch is part of the SIRIUS product brand.
What is the IP protection class of the auxiliary switch?
The switch has an IP20 protection class rating on the front, providing protection against solid objects larger than 12.5 mm.
Is the auxiliary switch compatible with contactor relays and power contactors?
Yes, the switch is designed for use with contactor relays and power contactors, enhancing their functionality.
Does the auxiliary switch have any specific product functions related to safety?
Yes, the switch includes a mirror contact function according to IEC 60947-4-1 and positively driven operation according to IEC 60947-5-1, ensuring reliable performance in safety-related applications.
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