Siemens SIRIUS 3RH2 Contactor Relay, 24 V dc Coil, 4-Pole, 10 A, 4NO, 690 V ac

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£34.08

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£40.90

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RS Stock No.:
213-1003
Mfr. Part No.:
3RH2140-1HB40
Brand:
Siemens
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Brand

Siemens

Coil Voltage

24 V dc

Number of Poles

4

Contact Voltage Rating

690 V ac

Contact Current Rating

10 A

Range

SIRIUS

Series

3RH2

Normal State Configuration

4NO

Number Of Auxiliary Contacts

4

Auxiliary Contact Configuration

4NO

Terminal Type

Screw

Length

57.5mm

Width

45mm

Depth

73mm

Mounting Style

DIN Rail

Control Voltage

24 V dc

Minimum Operating Temperature

-25°C

Load Current

10A

Load Voltage

690V ac

Maximum Operating Temperature

+60°C

COO (Country of Origin):
DE

Siemens 3RH2 Series Contactor Relay, 24V DC Control Voltage, 10A Current Rating - 3RH2140-1HB40


This contactor relay is a reliable solution for switching auxiliary circuits within various electrical applications. Designed with four poles, it operates at a control voltage of 24V DC. The compact dimensions—57.5mm in length, 45mm in width, and 73mm in depth—allow for easy installation on a DIN rail.

Features & Benefits


• Supports a contact voltage rating of up to 690V AC
• Auxiliaries configured with four NO contacts enhance versatility
• Designed for high-frequency switching at 10,000 operations per hour
• Screw terminal connections ensure secure and flexible wiring

Applications


• Used primarily for controlling motors and handling auxiliary circuits
• Suitable for within PLC environments
• Essential in electrical panels for automation tasks
• Utilised in high voltage settings to enhance circuit protection

How does the temperature range affect the relay's performance?


Operating in temperatures from -25°C to +60°C ensures that the relay performs effectively in diverse environmental conditions, making it suitable for various industrial settings.

What is the significance of the mechanical life of 30 million cycles?


A mechanical life of 30 million cycles signifies long-lasting durability and reduces the frequency of replacements, leading to decreased maintenance costs in operational environments.

What voltage do the relay contacts operate at for AC and DC applications?


The relay supports a contact current rating of 10A for both AC and DC applications, with varying specifications depending on the voltage used. For instance, the relay can handle 10A at 24V DC or up to 1A at 690V AC.

How does the relay facilitate integration into existing systems?


The DIN rail mounting style and screw terminal connections simplify the integration process, allowing for quick installation and compatibility with standard automation setups.