7SR5121-6AA16-1AA0, Siemens Reyrolle, Directional time-overcurrent protection, 7SR51 Series, 5 curr. trans., 37BI, 18BO

The 7SR5121-6AA16-1AA0 is a directional time-overcurrent protection device designed for industrial automation applications. It is part of the 7SR51 series and offers comprehensive protection for electrical circuits.

Key Features:

• Directional Time-Overcurrent Protection: Provides protection against excessive currents flowing in a specific direction, preventing damage to equipment and ensuring system safety.
• 5 Current Transformers (CTs): Monitors currents from five different circuits, allowing for more precise protection.
• 4 Voltage Transformers (VTs): Measures voltages from four different circuits, enabling accurate directional determination.
• 37 Binary Inputs (BIs): Accepts digital signals from external devices, allowing for extensive integration with other systems.
• 18 Binary Outputs (BOs):: Provides digital outputs to control external devices or indicate alarm conditions.
• Standard Interfaces: Equipped with a USB interface for easy configuration and data transfer, an RS 485 interface for serial communication, and two RJ45 interfaces for network connectivity.
• S12 Enclosure: Housed in a larger S12 enclosure, providing additional space for internal components and offering more protection against harsh environmental conditions.
• Conformal Coating: Features a conformal coating to enhance resistance to moisture, dust, and other contaminants.

Applications:

• Power distribution systems
• Industrial processes
• Motor control
• Generator protection

Overall, the 7SR5121-6AA16-1AA0 is a reliable and versatile protection device that offers comprehensive protection for electrical circuits in industrial automation applications. Its increased number of inputs and outputs, along with the larger S12 enclosure, make it suitable for more complex and demanding applications.

Datasheet