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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RH2122-2BB40 |
| Alternative Part Number | 3RH21222BB40 |
| Manufacturer | Siemens |
| Product Type | Contactor Relay |
| Contact Configuration | 2 Normally Open (NO); 2 Normally Closed (NC) |
| Rated Current | 10 A |
| Coil Voltage | 24 V dc (Control) |
| Size | S00 |
| Control Circuit | DC (Control) |
| Frequency | 1000 MHz |
| Protection Rating | IP20 |
| Mounting Type | Screw and snap-on mounting onto 35 mm standard mounting rail |
| Terminal Type | Spring-loaded terminals |
| Insulation Voltage | Rated at 690 V with degree of pollution 3 |
| Ambient Operating Temperature | -25 … +60 °C |
| Shock Resistance | 10g / 5 ms, 5g / 10 ms (rectangular impulse); 15g / 5 ms, 8g / 10 ms (sine pulse) at DC |
| Mechanical Operating Cycles | Typical 30 million |
| Commodity Code | 853649 |
| Approvals | General Product Approval, EMC, KC, Functional Safety/Safety of Machinery, Declaration of Conformity, Test Certificates |
The Siemens 3RH2122-2BB40 is a high-quality contactor relay designed for a wide range of industrial applications. This component is part of the SIRIUS product family, renowned for its reliability and versatility in automation and control systems. With a compact size S00 footprint, it is engineered to save space inside control cabinets while delivering robust performance.
This contactor relay features 2 normally open (NO) and 2 normally closed (NC) contacts, making it suitable for various switching operations. The device operates with a control voltage of 24 V DC, ensuring compatibility with standard DC control circuits. The spring-loaded terminals provide a secure and maintenance-free electrical connection, which is crucial for long-term stability and safety in industrial environments.
The 3RH2122-2BB40 is designed with a finger-safe protection class of IP20, offering protection against touch and foreign objects. It can withstand impulse voltages up to 6 kV and operates reliably within an ambient temperature range of -25 to +60 degrees Celsius, making it suitable for challenging environments.
Mechanical durability is a key feature of this contactor relay, with a mechanical service life of up to 30 million switching cycles, ensuring a long operational lifespan. The device also boasts a shock resistance that meets stringent industry standards, withstanding both rectangular and sine pulse shocks, which is indicative of its robustness in industrial settings where machinery vibrations and shocks are common.
The Siemens 3RH2122-2BB40 is a testament to Siemens' commitment to quality and efficiency, providing a reliable solution for controlling electrical circuits in a variety of industrial applications.
Commonly Asked Questions
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Frequently Asked Questions
What type of device is this Siemens contactor relay?
The Siemens contactor relay is an electromechanical switching device designed for controlling power circuits. It features 2 normally open (NO) and 2 normally closed (NC) contacts, suitable for various industrial applications.
Can this contactor relay be used in safety-related applications?
While the contactor relay is built to high standards of quality, its suitability for safety-related applications depends on the specific requirements of the system. It's advisable to consult the relevant safety standards and possibly look for devices specifically certified for safety functions.
What is the rated control supply voltage for this contactor relay?
The rated control supply voltage for this contactor relay is 24 V DC, which is the typical voltage required for the coil to operate the switching mechanism.
What is the size of this contactor relay?
This contactor relay is of size S00, which is a compact size suitable for use in space-constrained environments.
What is the maximum operating current for the auxiliary contacts?
The maximum operating current for the auxiliary contacts is 10 A at AC-15 at 230 V rated value.
What type of terminal does this contactor relay have?
This contactor relay is equipped with spring-loaded terminals, which provide a secure and maintenance-free electrical connection.
What is the protection class of this contactor relay?
The protection class for the front of this contactor relay is IP20, indicating protection against solid objects larger than 12.5 mm but not against water.
What is the mechanical service life of this contactor relay?
The mechanical service life of the contactor relay is typically around 30 million operating cycles, which indicates its durability and reliability over time.
Can this contactor relay be used at different altitudes?
Yes, this contactor relay can be used at installation altitudes up to 2,000 meters above sea level without derating.
What are the ambient temperature limits for operating this contactor relay?
The contactor relay can operate within an ambient temperature range of -25 to +60 degrees Celsius, ensuring functionality in a variety of environmental conditions.
Part conditions explained
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Refurbished: The product has been previously used, but it has undergone a thorough refurbishment process to restore it to a like-new or functional condition. Any defects or issues have been addressed, making it suitable for reuse.
Used: The product has been previously owned and has been used. It may show signs of wear and tear but is still functional and operational. The condition may vary depending on the specific item and its usage history.
