The Siemens Auxiliary Contact Block 3RH1921-1CD01 is a high-quality industrial accessory designed to enhance the functionality of Siemens SIRIUS contactors in frame sizes S6 to S12. Engineered for industrial automation, motor control, and electrical switching applications, this 1-pole front mounted auxiliary contact block provides an additional auxiliary contact for signaling, monitoring, interlocking, and control circuit operations.
Available at SB Smart (sbsmart.in), the 3RH1921-1CD01 Auxiliary Contact Block offers seamless compatibility with Siemens SIRIUS power contactors, enabling engineers and panel builders to expand system capabilities without increasing control panel complexity. Its compact front-mounted design ensures easy installation and reliable operation in demanding industrial environments.
The Siemens 3RH1921-1CD01 features a 1 Normally Open (1NO) contact configuration, making it ideal for PLC feedback signals, status indication, control logic circuits, and automation applications. Built according to Siemens' strict quality standards, this auxiliary contact block delivers dependable switching performance, long service life, and excellent operational reliability.
Modern industrial control systems often require additional auxiliary contacts to support advanced monitoring and control functions. The 3RH1921-1CD01 provides a simple and effective solution for expanding the auxiliary contact capacity of Siemens contactors while maintaining a compact panel layout.
Its front-mounted design allows quick installation on compatible S6–S12 contactors, making it a practical choice for new installations and retrofit projects. The 1NO contact configuration is particularly suitable for signaling and feedback applications where a normally open contact is required.
By incorporating the Siemens 3RH1921-1CD01 Auxiliary Contact Block, users can improve operational visibility, enhance automation capabilities, and increase system flexibility.
The Siemens 3RH1921-1CD01 provides additional contact functionality for a wide range of industrial applications, including:
The front-mounted configuration allows easy access and installation while maintaining efficient use of panel space.
The Siemens 3RH1921-1CD01 Auxiliary Contact Block is widely used in:
Its dependable performance and compatibility with Siemens SIRIUS contactors make it a valuable addition to industrial automation systems.
At SB Smart (sbsmart.in), we provide genuine Siemens industrial automation and electrical products sourced through authorized channels. The 3RH1921-1CD01 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 an existing automation system, or adding monitoring capabilities to industrial equipment, the Siemens 3RH1921-1CD01 delivers the reliability and performance required for professional applications.
| Specification | Details |
|---|---|
| Product Name | Auxiliary Contact Block |
| Manufacturer | Siemens |
| Series | SIRIUS |
| Order Code | 3RH1921-1CD01 |
| 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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