New Product News Measuring & Monitoring Relays Series K8AK/K8DS DIN 22.5/17.5 Size Lineup of A Wide Range of Measuring and Monitoring Relays Compact 22.5 mm and 17.5 mm housings Resistant to high-frequency noise Compliance with global power and safety standards Model Number Structure Model Number Legend K8AK- 12 1. Function AS: Single-phase Current Relay AW: Single-phase Overcurrent/Undercurrent Relays VS: Single-phase Voltage Relay VW: Single-phase Overvoltage/Undervoltage Relays PH: Phase-sequence Phase-loss Relay PW: Three-phase Voltage Relay PM: Three-phase Phase-sequence Phase-loss Relay PA: Three-phase Asymmetry and Phase-sequence Phase-loss Relay TH: Temperature Monitoring Relay LS: Conductive Level Controller 2. Supply Voltage Refer to Ordering Information for the relevant model. Note: Models are also available with fixed set values. Consult with your OMRON representative for conditions. Models with fixed set values are available for the following models: K8AK-AS, K8AK-AW, K8AK-VS, K8AK-VW, K8AK-PM, K8AK-PA, K8AK- PW, and K8AK-LS. K8DS- 12 1. Function PH: Phase-sequence Phase-loss Relay 2. Setting range 1: One SPDT relay output 1Abnormality detection needed for the Machine, Facility, Load. K8AK Series Measuring & Monitoring Relay K8AK/K8DS series selection guide Object Signal input Monitoring function Relay output Our products 1-Phase Current Relay Over or Under One DC SPDT K8AK-AS current current Current or input AC 1-Phase Current Relay Over & Under Two (Window comparator) current SPDT current K8AK-AW Single phase circuit monitoring 1-Phase Voltage Relay Over or Under One DC SPDT K8AK-VS voltage Voltage Voltage input or AC 1-Phase Voltage Relay Over & Under Two (Window comparator) Voltage SPDT voltage K8AK-VW 3-Phase Sequence, One Loss Relay SPDT K8DS-PH 3-phase 3 wires Phase-sequence, voltage Loss 3-Phase Sequence, One Loss Relay DPDT K8AK-PH 3-Phase Voltage Relay Three-phase Two Over & Under (Window comparator) circuit SPDT voltage K8AK-PW monitoring 3-phase 3 wires 3-Phase Voltage, Over & Under voltage Sequence, Loss Relay Two voltage or (Window comparator) SPDT Phase-sequence, 3-phase 4 wires K8AK-PM Loss voltage 3-Phase Asymmetry, Phase-sequence, One Sequence, Loss Relay Loss SPDT Phase asymmetry K8AK-PA Temperature Thermocouple Temperature One Monitoring Relay Temperature SPDT Pt100 / Pt1000 alarms monitoring K8AK-TH 10 k to 100 k Conductive Level Supply/Drainage One Liquid Conductive Controller (Adjust) SPDT control level level control electrode E1, E2, E3 K8AK-LS 2