Mains monitoring relay for voltage window measurement


The NKR F1 mains monitoring relay is used to monitor the phase voltages of one- up to three-phase networks. When used in a three-phase network, the phase position can also be monitored. Both undervoltage and overvoltage are monitored (voltage window).
The switching thresholds are adjustable: Undervoltage 160-220 V, overvoltage 230 - 300 V. The response time (relay switch-off delay tv) is adjustable from 0.1 to 5s.
The NKR F1 detects the overvoltages that occur when the neutral conductor is interrupted, thus preventing damage to subsequent devices.

Emergency power supply, mobile electrical systems, building site power distribution systems, construction machinery, stage equipment, etc.

Technical data

Type: NKR F1
Item no.: NKRF19
EAN: 4046929301060
Specifications: 230V AC, 1 CO potential-free 10A
Uvar: 170-300V
Dimensions: 18 x 55 mm

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