Siemens 7SR5421-2AF12-0AA0

The Siemens 7SR5421-2AF12-0AA0 is a transformer protection relay designed for reliable and precise safeguarding of power transformers. This device features a compact S12 frame size and supports a wide power supply range from 100 to 230 VAC or 24 to 250 VDC, making it adaptable to various installation environments. It comes equipped with 37 digital inputs and 18 digital outputs, allowing for extensive monitoring and control capabilities. Communication is facilitated via RS485 and two RJ45 interfaces, ensuring seamless integration into existing automation networks. Additional features include overload protection, seven function keys for easy operation, and clear LED indicators to provide at-a-glance status information. The relay operates efficiently within a temperature range of -10 to +55 degrees Celsius. Distributed by BSP Automation, this product offers a robust solution for transformer protection needs in industrial settings.