SITOP PSE202U Redundancy Module Input/Output: 24 V DC/40 A Suitable For Decoupling Two SITOP Power Supplies With Maximal Per 20 A Output Current

Siemens 6EP1961-3BA21 is a SITOP PSE202U redundancy module for 24 V DC systems, designed to decouple two SITOP power supplies and maintain supply availability if one source fails. It supports 24 V DC input/output at up to 40 A total current and is intended for use with two power supplies rated up to 20 A each. The module provides an isolated changeover relay contact for status signaling, uses screw terminals, and snaps onto a standard DIN rail for control-panel installation.