The TRIO-UPS/1AC/24DC/5 represents both perfect AC power supply as well as an uninterruptible power disturbance 24 V DC at a maximum load current of up to 5 A for disposal. It is particularly suitable for the supply of industrial PCs (IPC). The power supply as well as the electronic switching unit are housed in a common housing. In case of supply voltage failes it will be switched in buffer operation without interruption. In this mode of operation the output voltage depends directly on the battery voltage. The IPC works with a voltage dip without interruption further and thus increases the plant availability. An uncontrolled shutdown. The TRIO-UPS/ 1AC/ 24DC/5 is provided with a service-PC and the configuration and management software UPS-CONF via IFS-USB-PROG-adapter can be parameterized. For the convenient transfer between different parameters TRIO-UPS devices, the optional configuration Stick IFS CONFSTICK is provided.