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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RH1122-2KB40 |
| Alternative Part Number | 3RH11222KB40 |
| Manufacturer | Siemens |
| Contact Configuration | 2 Normally Open (NO) / 2 Normally Closed (NC) |
| Rated Current | 10 A |
| Control Supply Voltage | 24 V dc |
| Size | S00 |
| Insulation Voltage | Rated at 690 V with degree of pollution 3 |
| Ambient Operating Temperature | -40 … +70 °C during operation |
| Mechanical Operating Cycles | Typical 30,000,000 |
| Installation Altitude | Up to 2,000 m above sea level |
| Protection Class | IP20 on the front |
| Surge Voltage Resistance | Rated value 6 kV |
| Mounting Type | Screw and snap-on mounting |
| Connection Type | 3-pole cage clamp connection |
| Contact Reliability | One incorrect switching operation of 100 million switching operations (17 V, 1 mA) |
| Resistance to Shock | 10g / 5 ms and 5g / 10 ms |
| Design of the Surge Suppressor | With varistor |
| Product Approvals | CSA / UL / CCC / GL / LRS / BV / DNV / RMRS / RINA |
The Siemens 3RH1122-2KB40 is a high-quality contactor relay designed for efficient control within electrical systems. This compact and robust component is part of the SIRIUS product range and is engineered to facilitate seamless integration into a variety of industrial applications. With a configuration of 2 normally open (NO) and 2 normally closed (NC) contacts, it offers versatility in managing control circuits.
Rated for 10 A and equipped with a 24 V dc control supply voltage, this contactor relay ensures reliable operation even in demanding environments. The inclusion of a varistor provides surge suppression, enhancing the durability and longevity of the device. The S00 size of the contactor makes it suitable for space-conscious installations, while the IP20 protection class on the front ensures basic protection against solid objects.
The 3RH1122-2KB40 is designed to withstand a wide range of ambient temperatures, making it suitable for operation in diverse conditions. Its mechanical service life is impressive, with a typical rating of 30 million operating cycles, indicating a commitment to reliability and performance.
This contactor relay is ideal for those seeking a dependable solution for switching auxiliary circuits within their electrical systems. Its design and build quality reflect Siemens' commitment to excellence in industrial control components.
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 switching auxiliary circuits and control signals. It features 2 normally open (NO) and 2 normally closed (NC) contacts, making it suitable for various industrial applications.
Can this contactor relay be used in safety-related applications?
Yes, this contactor relay can be used in safety-related applications. It has a specific proportion of dangerous failures percentage and a B10 value, making it suitable for use in safety functions up to a certain level as defined by the relevant standards.
What is the rated control supply voltage for this contactor relay?
The rated control supply voltage for this contactor relay is 24 V DC, with an operating range factor of 0.7 to 1.25 times the rated value of the magnet coil at DC.
What is the insulation voltage rating for this contactor relay?
The insulation voltage rating for this contactor relay is 690 V, with a degree of pollution 3, ensuring it can safely isolate the control circuit from higher voltages.
What are the ambient temperature limits for operating this contactor relay?
The ambient temperature limits for operating this contactor relay range from -40°C to +70°C, which allows it to function reliably in a wide range of environmental conditions.
What type of connections does this contactor relay support?
This contactor relay supports Cage Clamp terminals, which provide a secure and maintenance-free connection for the auxiliary and control current circuits.
What is the mechanical service life of this contactor relay?
The mechanical service life of this contactor relay is typically 30 million operating cycles, indicating its durability and reliability over time.
How is the surge suppression designed in this contactor relay?
The surge suppression in this contactor relay is designed with a varistor, which helps to protect the control circuit from voltage spikes and transients.
What certifications does this contactor relay hold?
This contactor relay holds several certifications, including CSA, UL, CCC, GL, LRS, BV, DNV, RMRS, and RINA, which attest to its compliance with international standards and regulations.
What is the size of this contactor relay?
The size of this contactor relay is S00, which is a compact size category within the Siemens SIRIUS modular system, making it suitable for space-saving installations.
Part conditions explained
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