Siemens 3RH1921-1CA01, Snap-On Auxiliary Contact with Screw Terminal, NC

Enrgtech Part No: ET16848787
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Manufacturer Part No:
3RH1921-1CA01
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Manufacturer: Siemens

3RH1921-1CA01 Siemens , Snap-On Auxiliary Contact with Screw Terminal, NC

Product Information

Contact Voltage Rating:

690 V

Minimum Operating Temperature:

-55°C

Operating Temperature Range:

-55 → +80 °C

Contact Current Rating:

1 A

Series:

3RH1

Pole and Throw Configuration:

Mounting Style:

Snap-On

Range:

Sirius Classic

Normal State Configuration:

1NC

Number of Contacts:

Maximum Operating Temperature:

+80°C

Terminal Type:

Screw

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The Siemens 3RH1921-1CA01 is an auxiliary contact block designed for industrial applications. It is a snap-on device with a screw terminal, providing a reliable and efficient means of extending the functionality of control relays and contactors. This model is notable for its normally closed (NC) contact configuration. Its design and features make it a valuable asset for enhancing the functionality and safety of various electrical systems.

Salient Features and Benefits of the Snap-On Auxiliary Contact

The 3RH1921-1CA01 is built to withstand the rigours of industrial environments.
Its durable construction ensures longevity and consistent performance under various operating conditions.
Featuring a Snap-On mechanism, this auxiliary contact block is designed for quick and hassle-free installation.
Siemens has designed this model to be compatible with a wide range of control relays and contactors.
The screw terminal provides a secure and stable connection, ensuring reliable operation and minimising the risk of connection failures.

Space-Efficient Design

Its compact size enables efficient use of space within control panels, an essential aspect in modern industrial setups where space can be at a premium.

The Siemens 3RH1921-1CA01, Snap-On Auxiliary Contact with Screw Terminal, NC: Use Cases

The Siemens 3RH1921-1CA01, with its robust construction, ease of installation, and versatile application, stands out as a reliable component in industrial control systems, including:

Motor Control Centres: The 3RH1921-1CA01 is widely utilised in motor control centres for adding auxiliary control, signalling, and interlocking functions.
Automation Systems: In automation systems, this auxiliary contact block is crucial for providing feedback signals and confirming the safe and efficient operation of the system.
Safety Circuits: Due to its normally closed configuration, it is ideal for use in safety circuits, where it can be used to ensure that a circuit is de-energised for safe maintenance or in an emergency.
Energy Management: It also finds applications in energy management systems, where it assists in monitoring and controlling power usage.

Datasheet(Technical Reference)

Sirius: Migrating From Classic to Innovation(Technical Reference)

Manual - Contactor S6 / S10 / S12(Technical Reference)

3RH1921-1CA01(Datasheets)

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