K8AK-VS 1-phase control Single-phase voltage relay These single-phase voltage relays are for monitoring over- and undervoltages. Manual resetting and automatic resetting are supported by one relay. Relay warning status can easily be monitored using the LED indicator. • Single-phase voltage relay • In 22.5 mm wide industrial housing • Under or over control • Supply voltages: 24 VAC/DC, 100 to 240 VAC • Easy wiring with ferrules Ordering information Measuring current Supply voltage Order code 1 to 10 VAC/DC, 3 to 30 VAC/DC, 15 to 150 VAC/DC 20 to 200 VAC/DC, 30 to 300 VAC/DC, 60 to 600 VAC/DC 24 VAC/DC K8AK-VS2 24 VAC/DC 100 to 240 VAC K8AK-VS2 100-240 VAC 24 VAC/DC K8AK-VS3 24 VAC/DC 100 to 240 VAC K8AK-VS3 100-240 VAC Specifications Ambient operating temperature –20 to 60°C (with no condensation or icing) Storage temperature –25 to 65°C (with no condensation or icing) Operating voltage range 85% to 110% of rated operating voltage Rated power supply frequency 50/60 Hz±5 Hz ( AC power supply) Output relays (1 × SPDT, normally closed operation) Resistive load 5 A at 250 VAC or at 30 VDC Maximum contact voltage 250 VAC or 30 VDC Maximum contact current 5 A Maximum switching capacity 1,250 VA, 150 W Mechanical life 10,000,000 operations Electrical life 50,000 operations at 5 A, 250 VAC or 30 VDC Degree of protection Terminal section: IP20 Case material PC and ABS Weight Approx. 150 g Operating power Isolated power supply 2.0 VA/1.1 W max. at 24 VAC/DC, 4.6 VA max. at 100 to 240 VA Operate (SV) Operating value setting range 10% to 100% of maximum measuring voltage Operating value 100% operation at set value Reset (HYS.) Hysteresis 5% to 50% of operating value Resetting method Manual reset/automatic reset (switchable) Manual reset: Turn OFF operating power for 1 s or longer Operating time (T) 0.1 to 30 s Power ON lock (LOCK) 1 s or 5 s (Switched using DIP switch) (value when input rapidly changes from 0 to 100%. The operating time is the shortest at this point) Repeat accuracy Operating value ±0.5% full scale (at 25°C and 65% humidity, rated power supply voltage, DC or 50/60 Hz sine wave input) Operating time ±50 ms (at 25°C and 65% humidity, rated power supply voltage) Input frequency 40 to 500 Hz Overload capacity Continuous input at 115% of maximum input, 10 s at 125% (up to 600 VAC) Indicators LED power (PWR): Green LED, relay output (RY): Yellow LED, alarm output (ALM): Red LED Applicable standards Conforming standards EN 60947-5-1 Installation environment (pollution level 2, installation category III) EMC EN 60947-5-1 Safety standards UL 508 (Recognition), Korean Radio Waves Act (Act 10564), CSA and CCC Size in mm (H × W × D) 90 × 22.5 × 100 643
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