This voltage monitoring relay monitors a phase for exceedance or undershoot of the set limit value. Two relay changeover switches are available for reporting, which can be loaded up to 8 A. A limit value and the response or drop-out delay can be set for each exceedance and undershoot. The settings are made using controls on the front, which can be protected against changes under a transparent cover. An illuminated scale arrow makes it very clear to see the setting of the potentiometers, even from a distance. The diagnostic switch on the front enables the output relays to be switched off in order to test the entire application. When the transparent cover is closed, the diagnostic switch is automatically reset. The device is powered from the measuring circuit. Two LEDs show the status. The width is 22.5 mm and it is mounted on a top-hat rail. The cable is connected via screw terminals.
| Property | Value |
| Number of contacts as normally open: | 2 |
| Type of voltage for actuation: | AC/DC |
| Response value voltage: | 300 V |
| Max. permissible response delay time: | 30 s |
| Number of contacts as normally closed contacts: | 2 |
| Number of contacts as changeover contacts: | 2 |
| Design of the electrical connection: | Screw connection |
| Max. permissible release delay time: | 30 s |
| Width: | 22 mm |
| Height: | 90 mm |
| Depth: | 73 mm |
| Voltage measuring range 1: | 300 V |
| Rated control supply voltage Us at AC 50 Hz: | 240 V |
| With removable terminals: | no |
| 1-phase undervoltage possible: | yes |
| 3-phase undervoltage possible: | no |
| 1-phase overvoltage possible: | yes |
| 3-phase overvoltage possible: | no |
| 1-phase window possible: | yes |
| 3-phase window possible: | no |
| Contains DC undervoltage function: | yes |
| Contains DC overvoltage function: | yes |
| Contains DC voltage window function: | yes |
| Voltage type of measuring range: | AC/DC |
| Rated control supply voltage Us at AC 60 Hz: | 240 V |
| Rated control supply voltage Us at DC: | 240 V |
