The Siemens 3RH1921-1DA11 is a versatile auxiliary contact block, designed to be seamlessly integrated with the 3RT1 series of contactors. This compact and robust component provides additional switching functions, expanding the capabilities of your electrical control systems.
Key Features and Benefits
1NO and 1NC Contacts: Equipped with one normally open (NO) and one normally closed (NC) contact, this auxiliary switch offers flexibility for various control applications.
Snap-on Design: The snap-on feature allows for quick and easy installation, minimizing downtime and enhancing maintenance efficiency.
Screw Terminal Connection: The screw terminal ensures a secure and reliable electrical connection, reducing the risk of loose wires.
Compact Size: Its compact dimensions save valuable panel space, making it ideal for applications with limited space.
Durability: Constructed with high-quality materials, the 3RH1921-1DA11 is designed to withstand harsh industrial environments and provide long-lasting performance.
Compliance with Standards: It meets the requirements of international standards such as IEC 60947-5-1, ensuring safety and reliability.
Technical Specifications
Product Number: 3RH1921-1DA11
Number of Contacts: 1NO + 1NC
Connection Type:Screw terminal
Mounting Type: Lateral
Contact Material: Silver alloy
Operating Voltage: Refer to the datasheet for specific voltage ratings
Operating Current: Refer to the datasheet for specific current ratings
Applications
The 3RH1921-1DA11 finds extensive use in a wide range of applications, including:
Motor Control: Providing auxiliary contacts for motor starters and contactors
Automation Systems: Used in various automation applications for signaling, interlocking, and control purposes
Machine Control: Implementing safety functions and control logic in industrial machinery
Precautions
Compatibility: Ensure compatibility with the 3RT1 series of contactors before installation.
Torque: Tighten the screw terminals to the specified torque to prevent loose connections.
Environmental Conditions: Operate within the specified temperature and humidity ranges to ensure optimal performance.
Safety: Always follow safety guidelines and local electrical codes when installing and wiring the device.
Shipping Port: Xiamen, China
Payment: Bank of Chicago, Bank of Singapore
Express cooperation: fedex, DHL, UPS and your express account
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