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Single-phase Overvoltage/Undervoltage Relay
K8AK-VW
Ideal for Voltage Monitoring for
Industrial Facilities and Equipment.
• Monitor for overvoltages and undervoltages simultaneously.
Separate settings and outputs supported for overvoltages and
undervoltages.
• Manual resetting and automatically resetting supported by one
Relay.
• Pre-alarm Monitoring Mode.
• Two SPDT output relays, 5 A at 250 VAC (resistive load).
• Process control signal (0 to 10 V) and current splitter input
supported.
• Output status can be monitored using LED indicator.
• Input frequency of 40 to 500 Hz supported.
• Inputs are isolated from the power supply.
Ordering Information
List of Models
Ratings and Specifications
Input Range
* The range is selected using connected terminals.
Refer to
Safety Precautions
on page 9.
Refer to page 8 for commonly asked questions.
For the most recent information on models that have been certified for
safety standards, refer to your OMRON website.
Setting range
Power supply voltage
Model
1 to 10 V AC/DC
3 to 30 V AC/DC
15 to 150 V AC/DC
24 VAC/DC
K8AK-VW2 24 VAC/DC
100 to 240 VAC
K8AK-VW2 100-240 VAC
20 to 200 V AC/DC
30 to 300 V AC/DC
60 to 600 V AC/DC
24 VAC/DC
K8AK-VW3 24 VAC/DC
100 to 240 VAC
K8AK-VW3 100-240 VAC
Model
Range*
Connection terminal
Setting range
Input impedance
Overload capacity
K8AK-VW2
0 to 10 V AC/DC
V1-COM
1 to 10 V AC/DC
3 to 30 V AC/DC
15 to 150 V AC/DC
Approx. 120 k
Ω
Continuous input at 115% of
maximum input.
10 s at 125%
(up to 600 VAC)
0 to 30 V AC/DC
V2-COM
Approx. 320 k
Ω
0 to 150 V AC/DC
V3-COM
Approx. 1.6 M
Ω
K8AK-VW3
0 to 200 V AC/DC
V1-COM
20 to 200 V AC/DC
30 to 300 V AC/DC
60 to 600 V AC/DC
Approx. 1.2 M
Ω
0 to 300 V AC/DC
V2-COM
Approx. 1.7 M
Ω
0 to 600 V AC/DC
V3-COM
Approx. 3.1 M
Ω
