K8AK-VS3 100-240VAC

Overview of Omron K8AK-VS3 100-240VAC

The Omron K8AK-VS3 is a single-phase voltage monitoring relay designed for detecting overvoltage and undervoltage conditions within a voltage range of 20 to 600 VAC or DC. It operates with a supply voltage of 100 to 240 VAC and features an SPDT relay output. This compact DIN rail-mounted relay provides reliable protection and control for electrical systems.

Key Features of Omron K8AK-VS3 100-240VAC

• Voltage Monitoring Range: 20 to 600 V AC/DC input with selectable ranges of 20-200, 30-300, and 60-600 V for flexible application.[web:303]
• Supply Voltage: Operates on 100 to 240 VAC single-phase power supply with allowable operating voltage range of 85% to 110% of rated voltage.[web:303]
• Relay Output: One SPDT relay output rated for 5 A at 250 VAC or 30 VDC resistive load.[web:306]
• Adjustable Settings: Operating voltage and hysteresis adjustable via voltage and hysteresis knobs; operating time adjustable from 0.1 to 30 seconds.[web:303]
• Power On Lock: Selectable power on lock time of 1 or 5 seconds via DIP switch to avoid nuisance tripping.[web:303]
• Indicators: LED indicators for power (green), relay output (yellow), and alarm (red) for easy monitoring.[web:303]
• Durability: High vibration and shock resistance with IP20 protection at terminals.[web:303]
• Compact Size: 22.5 mm wide DIN rail mountable housing for space-efficient installation.[web:305]
• Safety Compliance: Certified according to UL, CSA, IEC, VDE, and other standards ensuring reliable and safe operation.[web:303]

Technical Specs of Omron K8AK-VS3 100-240VAC

Model Name	K8AK-VS3 100-240VAC
Brand	Omron
Voltage Input Range	20 to 600 V AC/DC (selectable ranges 20-200, 30-300, 60-600)
Power Supply Voltage	100 to 240 VAC (single-phase)
Relay Output	SPDT, 5 A at 250 VAC / 30 VDC (resistive load)
Operating Time Setting	0.1 to 30 seconds
Hysteresis Setting	5% to 50% of operating value
Power ON Lock Time	1 or 5 seconds (switch selectable)
Input Impedance	Approx. 1.2 MΩ to 3.1 MΩ depending on input terminal
Operating Temperature Range	-20°C to 60°C
Degree of Protection	IP20 at terminals
Mounting	DIN rail mounting
Dimensions (W×H×D)	22.5 × 90 × 100 mm
Weight	Approx. 160 g

Applications / Use Case

The Omron K8AK-VS3 relay is ideal for protective monitoring of single-phase electrical systems to detect and prevent damage from voltage anomalies, used in industrial machinery, control panels, and power distribution systems.

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Verification Links:
https://industrial.omron.eu/en/products/K8AK-VS3-100-240VAC
https://www.tme.com/us/en-us/details/k8ak-vs3-230/monitoring-relays/omron/k8ak-vs3-100-240vac/
https://www.electricautomationnetwork.com/en/omron/omron-k8ak-vs3-100-240vac-378172