Siemens 6EP1961-3BA21 Controller

The Siemens 6EP1961-3BA21 is a SITOP PSE202U redundancy module designed to decouple two SITOP power supplies for building a redundant 24 V DC power system. It accepts input from two separate power supplies (each up to 20 A) and delivers a combined output of up to 40 A, ensuring continuous power to critical loads even if one supply fails.