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Siemens 3RH2122-1SB40

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3RH2122-1SB40
3RH2122-1SB40

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Marvo Stock ID MV-7C9E
HS Code 85364900
SKU 3RH2122-1SB40
Condition Used
Warranty 12 months
Weight (kg) 0.20
Length (mm) 73.00
Width (mm) 45.00
Height (mm) 57.50

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Specification & Description

Specification Description
Part Number 3RH2122-1SB40
Alternative Part Number 3RH21221SB40
Manufacturer Siemens
Product Type Coupling contactor relay
Contact Configuration 2 Normally Closed (NC) + 2 Normally Open (NO) contacts
Control Supply Voltage 24 V DC
Operating Range Factor 0.85 to 1.85 times the rated value of the magnet coil at DC
Surge Suppressor Integrated suppressor diode
Size S00
Terminal Type Screw terminal
Insulation Voltage Rated at 690 V AC with degree of pollution 3
Degree of Pollution 3
Surge Voltage Resistance Rated value 6 kV
Shock Resistance 10g / 5 ms, 5g / 10 ms (rectangular impulse); 15g / 5 ms, 8g / 10 ms (sine pulse) at DC
Mechanical Service Life Typical 30 million switching cycles
Ambient Operating Temperature -25 to +60 °C during operation; -55 to +80 °C during storage
No-load Switching Frequency 10,000 operations per hour at AC/DC
Closing Power of Magnet Coil 1.6 W at DC
Holding Power of Magnet Coil 1.6 W at DC
Closing Delay 30 to 100 ms at DC
Opening Delay 7 to 13 ms at DC
Arcing Time 10 to 15 ms
Auxiliary Contacts 2 NC instantaneous contacts + 2 NO instantaneous contacts
Operating Current at AC-12 Maximum 10 A
Operating Current at AC-15 10 A at 230 V, 3 A at 400 V, 2 A at 500 V, 1 A at 690 V rated value
Operating Current at DC-12 10 A at 24 V, 3 A at 110 V rated value
Reference Code According to IEC 81346-2: K
Installation Altitude Up to 2,000 metres above sea level

The Siemens 3RH2122-1SB40 is a coupling contactor relay designed for switching auxiliary circuits within a diverse range of applications. This compact and reliable component is part of the SIRIUS product family, renowned for its high-quality industrial control products. The relay features 2 normally closed (NC) and 2 normally open (NO) contacts, making it versatile for various control circuit configurations.

Engineered for DC operation, it has a rated control supply voltage of 24 V DC and includes an integrated suppressor diode to protect against voltage spikes. The device is characterised by its size S00 screw terminal, facilitating easy and secure connections. With an insulation voltage rated at 690 V and a surge voltage resistance of 6 kV, it ensures robust performance even in environments with a high degree of electrical pollution.

The 3RH2122-1SB40 is designed to withstand demanding conditions, with an ambient operating temperature range of -25 to +60 °C and a storage temperature range of -55 to +80 °C. It boasts a mechanical service life of typically 30 million switching cycles, indicating its durability and longevity in continuous use.

This relay is suitable for a no-load switching frequency of 10,000 operations per hour for both AC and DC, demonstrating its capability to handle high-frequency operations. The control circuit includes a closing delay of 30 to 100 ms and an opening delay of 7 to 13 ms, ensuring precise control over switching actions.

The 3RH2122-1SB40 is a testament to Siemens' commitment to quality and reliability, making it an excellent choice for industrial applications that require a dependable solution for controlling auxiliary circuits.

Commonly Asked Questions

Is my order covered by a warranty?

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Marvo is a highly credible supplier of industrial automation parts and components with dedicated hubs around the world offering industry-leading products and services. Marvo is committed to providing a quick, easy and reliable place to source your automation and control components. All purchases come as standard with a comprehensive 12-month return to base warranty meaning that, in just a few clicks, you can source critical parts more seamlessly than ever before. Click here to read an article on how Marvo is redefining convenience for automation and manufacturing professionals.

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Marvo takes pride in product quality and has put several measures in place to assure high levels of quality standards. For your peace of mind, all parts have been ‘Marvo Approved’ which means that they have been tested and checked to ensure that they are in working condition. Redefine convenience and secure priority delivery on all parts along with a comprehensive 12-month warranty. This is the smart new way to buy automation and control components.

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Frequently Asked Questions

What type of device is this?

This is a coupling contactor relay designed for switching auxiliary circuits in industrial applications.

Can you describe the contact configuration?

The contactor relay has a configuration of 2 normally closed (NC) and 2 normally open (NO) contacts.

What is the control supply voltage for this relay?

The control supply voltage for this relay is 24 V DC.

Is there any built-in surge protection?

Yes, the relay comes with an integrated suppressor diode for surge protection.

What is the size of this contactor?

The contactor is of size S00, which is a compact size for use in various applications.

What are the operating and storage temperature ranges for this relay?

The operating temperature range is from -25°C to +60°C, and the storage temperature range is from -55°C to +80°C.

What is the mechanical service life of the relay?

The mechanical service life of the relay is typically around 30 million switching cycles.

What is the insulation voltage rating for this device?

The insulation voltage rating with a degree of pollution 3 is 690 V.

How is the relay protected against shock and vibration?

The relay is designed to withstand shock resistance at rectangular impulse and sine pulse at specified g forces and durations, ensuring durability in industrial environments.

What certifications does this relay have?

The relay has general product approvals and may have additional certifications such as KC, Type Examination Certificate, and others relevant to its use in industrial applications.

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Part conditions explained

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New unsealed: The product is in its original packaging, but the packaging has been opened or unsealed. It has never been used and should be in near pristine condition.

New sealed: The product is sealed in its original packaging. It has never been opened or used, ensuring that it's in an untouched state.

New unboxed: The product does not come in its original packaging, but it has never been used and is in great working condition.

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.

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