USV-40A synchronous switching devices ensure that three-phase loads are disconnected in case of loss of voltage at least at one of the supply phases, and that they are subsequently activated when all phase voltages appear.
| Nominal input voltage, V | 220/380 |
| Extreme range of Y-voltage, V | from 180 to 260 |
| Nominal load current, A | 40 |
| Overall dimensions (WxHxD), mm | 255x270х100 |
| Mass, kg | 2 |

