Schalk Network Monitoring Relay NKR F1

Manufacturer: Schalk
Designation: Network monitoring relay with phase sequence 3x230/400V
Type: NKR F1
Electrical connection type: Screw connection
With removable terminals: no
1-phase undervoltage possible: yes
3-phase undervoltage possible: yes
1-phase overvoltage possible: yes
3-phase overvoltage possible: yes
1-phase window possible: yes
3-phase window possible: yes
Includes DC undervoltage function: no
Includes DC overvoltage function: no
Includes DC window function: no
Voltage measurement range 1: 160..300 V
Voltage measurement range 2: 160..300 V
Type of voltage in measurement range: AC
Rated control supply voltage Us at AC 50 Hz: 150..400 V
Rated control supply voltage Us at AC 60 Hz: 150..400 V
Type of voltage for actuation: AC
Response value voltage: 160..300 V
Min. adjustable response delay time: 0.1 s
Max. permissible response delay time: 5 s
Number of contacts as changeover: 1
Width: 18 mm
Height: 88 mm
Depth: 55 mm

The NKR F1 monitors 1 to 3-phase networks for phase position, overvoltage, and undervoltage. This makes it possible to respond to neutral conductor interruptions and the overvoltages that typically occur. This helps prevent consequential damage in electrical systems. The reaction time to network faults can be adjusted from 0.1 s to 5 s. The relay can automatically reset after a fault condition or can be reset only after acknowledgment by an external button. Dimensions: 18x55 mm, 230 V AC - 1 W pf 10 A, Uvar 170-230 V. EAN: 4046929301060.