3RU2156-5EW10-8K – Thermal Overload Relay

Product Overview

The 3RU2156-5EW10-8K is a high-performance thermal overload relay designed by Siemens for reliable motor protection. It is suitable for use with SIRIUS 3RT contactors of size S6, offering a current range of 140 – 200 A and a power rating of 75 kW. This relay ensures optimal motor protection by monitoring and responding to overload conditions, preventing damage and downtime.

Key Features

• Current Range: 140 – 200 A
• Power Rating: 75 kW
• Mounting Type: Separate Mounting
• Reset Mode: Auto/Manual Reset
• Compatibility: Suitable for SIRIUS 3RT Contactors (Size S6)
• Protection Class: IP20
• Ambient Temperature Range: -20°C to +60°C
• Standards Compliance: IEC/EN 60947-4-1, UL 508, CSA C22.2 No. 14
• Adjustable Trip Class: Class 10A
• Contact Configuration: 1 NO + 1 NC
• Mechanical Life: 1,000,000 operations
• Electrical Life: 100,000 operations

Applications

The 3RU2156-5EW10-8K thermal overload relay is ideal for use in industrial and commercial applications where motor protection is critical. It is commonly used in:

• Motor control centers
• Pump and fan systems
• Conveyor systems
• Compressors
• Machinery and equipment requiring reliable motor protection

Benefits

• Ensures reliable motor protection against overload conditions
• Flexible reset options (auto/manual) for versatile applications
• Compact and easy to install with separate mounting design
• Compatible with Siemens SIRIUS 3RT contactors for seamless integration
• Durable construction with high mechanical and electrical life

Technical Specifications

Conclusion

The Siemens 3RU2156-5EW10-8K thermal overload relay is a robust and reliable solution for motor protection in demanding industrial environments. With its advanced features, compatibility with SIRIUS 3RT contactors, and flexible reset options, it ensures optimal performance and longevity for your motor-driven systems.