Siemens Auxiliary Switch Block 10A 3RH1921-1LA11

Siemens Auxiliary Switch Block 10A 3RH1921-1LA11

The Siemens 3RH1921-1LA11 is a 2-pole auxiliary switch block designed to enhance the functionality of motor contactors. It features one normally open (NO) and one normally closed (NC) contact, providing versatile control options for various industrial applications.

Key Features

• Contact Configuration: 1 NO + 1 NC
• Compliance: Conforms to EN 50005 standards
• Connection Type: Screw terminals for secure wiring
• Mounting: Snap-on design for easy attachment to motor contactors
• Cable Entry: Positioned at the top for convenient wiring
• Protection Class: IP20, ensuring safety in standard operating environments

Technical Specifications

• Rated Operational Current: 10A
• Voltage Ratings: Up to 690 VAC and 600 VDC
• Operating Temperature Range: -25°C to +60°C
• Mechanical Durability: Up to 10 million operating cycles
• Dimensions: 45 mm (W) x 51 mm (D) x 64 mm (H)
• Weight: Approximately 65 grams

Applications

This auxiliary switch block is suitable for use with Siemens motor contactors, providing additional control and signaling capabilities in industrial automation systems. Its robust design and compliance with international standards make it ideal for a wide range of applications.

Compliance and Certifications

• Standards: EN 50005
• Certifications: CE Marked, RoHS Compliant

For more detailed information, please refer to the official Siemens product documentation.