Siemens 3RH1921-1DA11

Overview

The Siemens 3RH1921-1DA11 auxiliary contact block is a vital component for expanding the functionality of industrial control circuits. Engineered to seamlessly integrate with Siemens 3RH and 3RT contactors, this robust and reliable module provides essential signal switching capabilities. It features one normally open (NO) and one normally closed (NC) contact, delivering versatile control options for a wide array of automation and motor control applications. Operating on a 24V DC supply, the 3RH1921-1DA11 is perfectly suited for modern industrial environments demanding precision and dependable performance. Its compact design ensures efficient use of panel space, making it an ideal choice for both new installations and system upgrades.

Key Features

• 1 Normally Open (NO) + 1 Normally Closed (NC) Contact: Provides flexible and comprehensive control for diverse signaling requirements.
• 24V DC Operating Voltage: Ensures broad compatibility with standard industrial control systems and power supplies.
• Clip-On Design for Siemens 3RH/3RT Contactors: Facilitates quick, tool-free installation and secure attachment, reducing downtime.
• High Electrical Lifespan: Engineered for exceptional durability, guaranteeing reliable switching operations over extended periods.
• Compact and Space-Saving Footprint: Optimized dimensions allow for efficient use of valuable space within control panels and enclosures.
• IEC and UL Compliant: Adheres to stringent international safety and performance standards, ensuring peace of mind.
• Screw Connection Terminals: Offers secure and reliable wiring connections for consistent electrical performance.

Technical Specifications

• Model: Siemens 3RH1921-1DA11
• Product Type: Auxiliary Contact Block
• Brand: Siemens
• Control Voltage: 24V DC
• Contacts: 1 NO + 1 NC
• Mounting Type: Clip-on for Siemens 3RH and 3RT contactors
• Electrical Lifespan: High durability for long-term switching operations
• Terminal Type: Screw connection
• Operating Temperature: -25°C to +60°C
• Protection Rating: IP20

Applications

• Industrial Automation Systems: Essential for expanding control logic in automated machinery and processes.
• Motor Control Circuits: Provides additional signaling and interlocking capabilities for electric motors.
• Signal Transmission and Electrical Isolation: Ideal for reliable signal routing and isolating control circuits from power circuits.
• Conveyor Systems: Enhances safety and operational control in material handling applications.
• HVAC and Building Automation: Used in supervisory control and data acquisition (SCADA) systems for environmental management.
• Process Control: Integral for monitoring and controlling various stages in industrial processes.

Why Choose the Siemens 3RH1921-1DA11?

• Unmatched Reliability: Built with Siemens' renowned quality, ensuring consistent and dependable operation in demanding industrial environments.
• Enhanced System Flexibility: Easily extends the capabilities of existing contactors and relays, optimizing your control system without extensive overhauls.
• Effortless Integration: The intuitive clip-on design allows for rapid and secure installation, minimizing commissioning time and complexity.
• Space Efficiency: Its compact form factor is specifically engineered to fit into tight control panels, maximizing available space.
• Global Compliance: Meeting both IEC and UL standards, this auxiliary contact block is suitable for use in a wide range of international applications.
• Cost-Effective Solution: A durable and reliable component that reduces maintenance needs and extends system longevity, providing excellent long-term value.

Order Now

Elevate the performance and reliability of your industrial control systems with the Siemens 3RH1921-1DA11 Auxiliary Contact Block. Experience the superior engineering and trusted quality that Siemens delivers. Order now to optimize your automation processes and ensure seamless operation with this essential control component.