New Product Phase-sequence Phase-loss Relay K8AB-PH1 Three-phase Phase-sequence Phase-loss Relay Using Voltage Detection Method Fixed phase Asymmetry monitoring Prevents reverse motor rotation due to incorrect wiring. Distinguishes between positive phases, reversed phases, and phase loss when power is turned ON. Voltage detection method enables application for any load current. One SPDT output relay, 6 A at 250 VAC (resistive load). Output status can be monitored using LED indicator. Model Number Structure Model Number Legend K8AB- 123 1. Basic Model 3. Rated Input Voltage K8AB: Measuring and Monitoring Relays 1: 200 to 500 VAC 2. Functions PH: Phase-sequence Phase-loss Relay Ordering Information List of Models Phase-sequence Phase-loss Functions Rated input voltage * Model Relay Phase sequence and phase loss 200 to 500 VAC K8AB-PH1 monitoring * The power supply is shared with the rated input voltage. 1K8AB-PH1 Ratings and Specifications Ratings Rated input voltage Three-phase, three-wire mode, 200 to 500 VAC Input load 15 VA max. Reversed phase and phase loss operating 0.1 s max. time Reset method Automatic reset Indicators Power (PWR): Green, Relay output (RY): Yellow Output relays One SPDT relay (NC operation) Rated load Resistive load 6 A at 250 VAC (cos = 1) 6 A at 30 VDC (L/R = 0 ms) Inductive load 1 A at 250 VAC (cos = 0.4) Output relay ratings 1 A at 30 VDC (L/R = 7 ms) Maximum contact voltage: 250 VAC Maximum contact current: 6 A AC Maximum switching capacity: 1,500 VA Minimum load: 10 mA at 5 VDC Mechanical life: 1,000,000 operations Electrical life: Make: 50,000 times, Break: 30,000 times Ambient operating temperature 20 to 60C (with no condensation or icing) Storage temperature 40 to 70C (with no condensation or icing) Ambient operating humidity 25% to 85% (with no condensation) Storage humidity 25% to 85% (with no condensation) Altitude 2,000 m max. Terminal screw tightening torque 0.54 Nm Recommended wire 2 Solid wire: 2.5 mm Twisted wires: AWG16, AWG18 Note: 1. Ferrules with insulating sleeves must be used with twisted wires. Terminal wiring method 2. Two wires can be twisted together. Recommended ferrules Al 1,5-8BK (for AWG16) manufactured by Phoenix Contact Al 1-8RD (for AWG18) manufactured by Phoenix Contact Al 0,75-8GY (for AWG18) manufactured by Phoenix Contact Case color Munsell 5Y8/1 Case material ABS resin (self-extinguishing resin) UL94-V0 Weight Approx. 110 g Mounting Mounted to DIN Track or via M4 screws (tightening torque: 1.2 Nm) Dimensions 22.5 (W) 90 (H) 100 (D) mm 2