The Siemens Auxiliary Contact Block 3RH1921-1CA10 is a high-quality industrial accessory designed to enhance the functionality of Siemens SIRIUS contactors in S6 to S12 frame sizes. Built for industrial automation, motor control, and electrical switching applications, this 1-pole front mounted auxiliary contact block provides an additional contact point for signaling, monitoring, interlocking, and control circuit operations.
Available at SB Smart (sbsmart.in), the 3RH1921-1CA10 Auxiliary Contact Block offers seamless compatibility with Siemens SIRIUS power contactors, enabling engineers, panel builders, and maintenance professionals to expand system capabilities without increasing panel complexity. Its compact front-mounted design ensures easy installation while maintaining the reliability, durability, and performance associated with Siemens industrial products.
The Siemens 3RH1921-1CA10 features a 1 Normally Closed (1NC) contact configuration, making it an ideal solution for safety interlocks, fault indication systems, equipment monitoring, and automation control circuits. Designed according to Siemens' strict engineering standards, this auxiliary contact block delivers dependable switching performance and long operational life in demanding industrial environments.
Modern industrial control systems often require additional auxiliary contacts for advanced monitoring and safety functions. The 3RH1921-1CA10 provides a practical solution for expanding the auxiliary contact capacity of Siemens contactors while maintaining a compact control panel layout.
Its front-mounted design allows quick installation on compatible Siemens S6–S12 contactors, making it suitable for both new projects and retrofit applications. The 1NC contact arrangement is particularly beneficial for safety monitoring, emergency stop circuits, fault detection systems, and process control applications where a normally closed contact is required.
By integrating the Siemens 3RH1921-1CA10 Auxiliary Contact Block, industries can improve operational safety, enhance system monitoring, and increase overall control flexibility.
The Siemens 3RH1921-1CA10 provides additional contact functionality for various industrial applications, including:
The front-mounted configuration allows convenient installation and maintenance while maximizing control panel efficiency.
The Siemens 3RH1921-1CA10 Auxiliary Contact Block is widely used in:
Its dependable operation and seamless compatibility with Siemens SIRIUS contactors make it an essential accessory for industrial automation and motor control applications.
At SB Smart (sbsmart.in), we supply genuine Siemens industrial automation and electrical products sourced through trusted channels. The 3RH1921-1CA10 Auxiliary Contact Block offers a reliable and cost-effective solution for expanding contactor functionality while maintaining Siemens-quality performance and durability.
Whether you are building a new control panel, upgrading existing automation equipment, or adding safety monitoring capabilities to industrial systems, the Siemens 3RH1921-1CA10 delivers the reliability and performance required for professional industrial applications.
| Specification | Details |
|---|---|
| Product Name | Auxiliary Contact Block |
| Manufacturer | Siemens |
| Series | SIRIUS |
| Order Code | 3RH1921-1CA10 |
| Product Type | Auxiliary Contact Block |
| Contact Configuration | 1NC |
| 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 | Safety, Monitoring & Interlocking |
| 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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