Siemens 3RH1921-1FA22

Overview

Elevate the functionality and reliability of your industrial control systems with the Siemens 3RH1921-1FA22 SIRIUS Auxiliary Contact Block. This essential component is meticulously engineered to seamlessly integrate with SIRIUS contactor relays and power contactors, providing critical additional switching capabilities. Boasting a versatile 2 normally open (NO) and 2 normally closed (NC) contact configuration, it offers unparalleled flexibility for diverse control circuits. The innovative snap-on front mounting design ensures rapid, tool-free installation, minimizing downtime and maximizing operational efficiency. Designed for robust performance in demanding industrial environments, the 3RH1921-1FA22 maintains the high standards of quality and engineering excellence synonymous with the Siemens brand. Please be aware that this specific model has been discontinued, and securing available stock is recommended for those seeking this reliable solution.

Key Features

• Versatile Contact Configuration: Equipped with 2 Normally Open (NO) and 2 Normally Closed (NC) contacts, providing comprehensive control options.
• Effortless Snap-on Mounting: Designed for quick and easy snap-on front mounting, eliminating the need for specialized tools and reducing installation time.
• Seamless Compatibility: Perfectly suited for integration with Siemens SIRIUS contactor relays and power contactors, ensuring optimal system performance.
• Durable Construction: Built to withstand rigorous industrial conditions with a robust design and adherence to high-quality manufacturing standards.
• Enhanced System Control: Expands the control capabilities of your existing contactors, offering greater flexibility in circuit design.
• Space-Saving Design: Compact dimensions (44 mm x 38 mm x 51 mm) allow for efficient use of panel space.
• Reliable Performance: Offers a mechanical service life of approximately 10 million switching cycles, ensuring long-term operational dependability.

Technical Specifications

• Product Type: Auxiliary Contact Block
• Manufacturer: Siemens
• Part Number: 3RH1921-1FA22
• Series: SIRIUS
• Contact Configuration: 2 NO + 2 NC
• Number of Contacts: 4
• Mounting Method: Snap-on front mounting
• Dimensions (W x H x D): 44 mm x 38 mm x 51 mm
• Mechanical Service Life: Approximately 10 million switching cycles
• Electrical Endurance at AC-15 (230 V): Approximately 200,000 switching cycles
• Operating Temperature Range: -25°C to +60°C
• Storage Temperature Range: -55°C to +80°C
• Protection Class: IP20
• Standards Compliance: DIN EN 50005, IEC 60947-5-1

Applications

• Motor Control Circuits: Essential for signaling and interlocking functions in various motor starting and stopping applications.
• Industrial Automation Systems: Used in complex control panels to provide auxiliary contacts for relays, contactors, and other control devices.
• Process Control: Integral for implementing safety interlocks and feedback loops in industrial process control systems.
• HVAC Systems: Enhances the control logic in heating, ventilation, and air conditioning systems.
• Switchgear and Control Panels: Provides critical additional switching points for a wide range of electrical control applications.
• Machine Building: Utilized in manufacturing machinery for precise control and monitoring of operational sequences.

Why Choose This Model?

• Proven Siemens Quality: Benefit from the renowned reliability and engineering excellence of Siemens, a global leader in industrial automation.
• Optimized for SIRIUS Systems: Specifically designed to integrate seamlessly with the SIRIUS range, ensuring perfect compatibility and performance.
• Effortless Installation: The snap-on mounting feature dramatically simplifies installation, saving valuable time and labor costs.
• Versatile Control Options: The 2 NO + 2 NC contact configuration provides robust flexibility for intricate control circuit designs.
• Compact and Efficient: Its small footprint allows for efficient utilization of space within control cabinets, critical in crowded industrial environments.
• Durable for Demanding Environments: Built to last with a high mechanical service life and a wide operating temperature range, ensuring consistent performance.

Order Now

Don't miss the opportunity to acquire the reliable Siemens SIRIUS Auxiliary Contact Block 3RH1921-1FA22. As this model has been discontinued, we encourage you to secure your units from our remaining stock to ensure the continued robust functionality of your control systems. Experience the proven quality and performance that only Siemens can deliver. Add to cart now!