Siemens 6EP1961-3BA01 SITOP PSE201U Buffer Module

6EP1961-3BA01 is a Siemens SITOP PSE201U buffer module that bridges brief interruptions in a 24 V DC supply. It supports a rated output current of 40 A, with backup time dependent on load.

6EP1961-3BA01 has a 24 V DC rated input. The Siemens data sheet specifies an allowable input range of 24 to 28.8 V DC; check the upstream supply before installation.

6EP1961-3BA01 provides 200 ms of backup at 40 A according to Siemens. The published chart also gives 400 ms at 20 A, 800 ms at 10 A and 1.6 s at 5 A; lower loads can extend the time up to 10 s.

6EP1961-3BA01 mounts on a standard DIN rail in a control cabinet. Siemens specifies the standard mounting orientation with the terminals at the bottom and at least 50 mm clearance above and below.

6EP1961-3BA01 has galvanic isolation between its input and output according to Siemens. Its enclosure protection rating is IP20.

6EP1961-3BA01 shows a green LED when the supply voltage exceeds 20.5 V. If the supply falls below 20.5 V, the LED is off, according to the Siemens equipment manual.

6EP1961-3BA01 should be specified by its complete Siemens article number. Provide the 24 V DC supply details, intended load current, required backup time and quantity so the configuration can be checked against the official load-dependent buffer chart.