New Product Single-phase Current Relay K8AB-AS Ideal for current monitoring for industrial facilities and equipment. Monitor for overcurrents or undercurrents. Manual resetting and automatically resetting supported by one Relay. Startup lock and operating time can be set separately. One SPDT output relay, 6 A at 250 VAC (resistive load). Output relay can be switched between normally open and normally closed. Process control signal (4 to 20 mA) and commercial CT input (0 to 1 A or 0 to 5 A) supported. Output status can be monitored using LED indicator. Inputs are isolated from the power supply. Model Number Structure Model Number Legend K8AB- 123 4 1. Basic Model K8AB: Measuring and Monitoring Relays 2. Functions AS: Single-phase Current Relay (One-sided operation) 3. Measuring Current 1: 2 to 20 mA AC/DC, 10 to 100 mA AC/DC, 50 to 500 mA AC/DC 2: 0.1 to 1 A AC/DC, 0.5 to 5 A AC/DC, 0.8 to 8 A AC/DC 3: 10 to 100 A AC, 20 to 200 A AC (See note.) Note: The K8AB-AS3 is specially designed to be used in combination with the OMRON K8AC-CT200L Current Transformer (CT). (Direct input is not possible.) 4. Supply Voltage 24 VAC/DC: 24 VAC/DC 100-115 VAC: 100 to 115 VAC 200-230 VAC: 200 to 230 VAC Ordering Information List of Models Single-phase Current Relay Measuring current Supply voltage Model 24 VAC/DC K8AB-AS1 24 VAC/DC 2 to 20 mA AC/DC, 10 to 100 mA AC/DC, 100-115 VAC K8AB-AS1 100-115 VAC 50 to 500 mA AC/DC 200-230 VAC K8AB-AS1 200-230 VAC 24 VAC/DC K8AB-AS2 24 VAC/DC 0.1 to 1 A AC/DC, 0.5 to 5 A AC/DC, 100-115 VAC K8AB-AS2 100-115 VAC 0.8 to 8 A AC/DC 200-230 VAC K8AB-AS2 200-230 VAC 24 VAC/DC K8AB-AS3 24 VAC/DC 10 to 100 A AC, 20 to 200 A AC 100-115 VAC K8AB-AS3 100-115 VAC (See note.) 200-230 VAC K8AB-AS3 200-230 VAC Note: The K8AB-AS3 is designed to be used in combination with an OMRON K8AC-CT200L Current Transformer (CT). (Direct input is not possible.) 1K8AB-AS Accessory (Order Separately) OMRON CT Current Transformer Input range Applicable Relay Model 10 to 100 A AC, K8AB-AS3 K8AC-CT200L 20 to 200 A AC Other CTs CT current on secondary side Applicable Relay 0 to 1 A AC, K8AB-AS2 0 to 5 A AC Ratings and Specifications Input Range Model Range * Connection terminal Measuring current Input impedance Overload capacity 0 to 20 mA AC/DC I1-COM Approx. 5 2 to 20 mA AC/DC, K8AB-AS1 0 to 100 mA AC/DC I2-COM 10 to 100 mA AC/DC, Approx. 1 50 to 500 mA AC/DC 0 to 500 mA AC/DC I3-COM Approx. 0.2 Continuous input : Approx. 0.12 120% of maximum input 0 to 1 A AC/DC I1-COM (Load : 0.5 VA) 1 s max. : 0.1 to 1 A AC/DC, 150% of maximum input Approx. 0.02 K8AB-AS2 0 to 5 A AC/DC I2-COM 0.5 to 5 A AC/DC, (Load : 1.5 VA) 0.8 to 8 A AC/DC Approx. 0.02 0 to 8 A AC/DC I3-COM (Load : 3 VA) Continuous input : 0 to 100 A AC I2-COM Using OMRON CT 120% of maximum input 10 to 100 A AC, 30 s max. : K8AB-AS3 20 to 200 A AC 200% of maximum input 0 to 200 A AC I3-COM Using OMRON CT (See note.) 1 s max. : 600% of maximum input Note: The K8AB-AS3 is designed to be used in combination with an OMRON K8AC-CT200L Current Transformer (CT). (Direct input is not possible.) * The range is selected using connected terminals. 2