The Siemens Auxiliary Contact Block 3RH1921-1CA01 is a high-quality industrial accessory designed to expand the functionality of Siemens SIRIUS contactors in S6 to S12 frame sizes. Developed for industrial automation, motor control, and electrical switching applications, this 1-pole front mounted auxiliary contact block provides an additional auxiliary contact that supports monitoring, signaling, feedback, and control circuit operations.
Available at SB Smart (sbsmart.in), the 3RH1921-1CA01 Auxiliary Contact Block integrates seamlessly with Siemens SIRIUS contactors, enabling engineers, panel builders, and maintenance professionals to enhance system performance without increasing control panel complexity. Its compact front-mounted design ensures easy installation while maintaining the durability and reliability associated with Siemens industrial automation products.
The Siemens 3RH1921-1CA01 features a 1 Normally Open (1NO) contact configuration, making it ideal for PLC feedback, equipment status indication, automation control logic, and signaling applications. Designed to Siemens' rigorous quality standards, this auxiliary contact block delivers dependable performance and long service life in demanding industrial environments.
In modern industrial applications, additional auxiliary contacts are often required to support advanced automation, monitoring, and control functions. The 3RH1921-1CA01 provides a simple and effective way to expand the functionality of Siemens contactors while maintaining a compact and organized control panel layout.
Its front-mounted design allows quick and secure attachment to compatible Siemens S6–S12 contactors. The 1NO contact arrangement is especially suitable for applications requiring status signaling, PLC input feedback, process monitoring, and automation control circuits.
The robust construction and high-quality materials used in the Siemens 3RH1921-1CA01 Auxiliary Contact Block ensure reliable switching performance even in harsh industrial conditions.
The Siemens 3RH1921-1CA01 provides additional contact functionality for a wide variety of industrial applications, including:
Its front-mounted configuration ensures convenient installation and easy accessibility during maintenance or upgrades.
The Siemens 3RH1921-1CA01 Auxiliary Contact Block is suitable for:
Its reliable operation and seamless compatibility with Siemens SIRIUS contactors make it a valuable accessory for industrial control and automation systems.
At SB Smart (sbsmart.in), we provide genuine Siemens industrial automation and electrical products sourced through trusted supply channels. The 3RH1921-1CA01 Auxiliary Contact Block offers a dependable and cost-effective solution for expanding contactor functionality while maintaining Siemens-quality performance and reliability.
Whether you are designing a new control panel, upgrading an existing automation system, or adding monitoring capabilities to industrial equipment, the Siemens 3RH1921-1CA01 delivers the durability, reliability, and operational efficiency required for professional applications.
| Specification | Details |
|---|---|
| Product Name | Auxiliary Contact Block |
| Manufacturer | Siemens |
| Series | SIRIUS |
| Order Code | 3RH1921-1CA01 |
| Product Type | Auxiliary Contact Block |
| Contact Configuration | 1NO |
| Number of Poles | 1 Pole |
| Mounting Position | Front Mounted |
| Compatible Contactor Sizes | S6 to S12 |
| Terminal Type | Screw Terminals |
| Mounting Method | Front Mount |
| Electrical Function | Signaling & Feedback |
| Suitable For | Siemens SIRIUS Contactors |
| Industrial Application | Yes |
| Mechanical Life | Long Service Life |
| Electrical Durability | Industrial Grade |
| Brand | Siemens |
| Condition | New & Genuine Product |
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