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

Description

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: SP

Mounting Style: Snap-On

Range: Sirius Classic

Normal State Configuration: 1NC

Number of Contacts: 1

Maximum Operating Temperature: +80°C

Terminal Type: Screw

HTSUS: 8536.50.9065 Package: Bulk Series: SIRIUS 3RH1 RoHS Status: ROHS3 Compliant Accessory Type: Auxiliary Switch REACH Status: REACH Unaffected Moisture Sensitivity Level (MSL): Not Applicable Base Product Number: 3RH1921 standardLeadTime: 2 Weeks For Use With/Related Products: 3RT1 Contactors ECCN: EAR99

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.