K8AK-PH3-phase control 3-phase sequence, phase loss relay The K8AK-PH1 monitoring relay is designed to monitor 3-phase 3-wire supplies. It simultaneously monitors phase sequence and phase loss during start up as well as phase loss during operation.The outputrelay releases when alarm conditions are detected, and the warning status can easily be monitored using the LED indicator. Suitable for industrial facilities and equipment. • Monitors phase sequence and phase-loss simultaneously • Measuring range: 200 to 480 VAC • Power supply voltage is the same as measuring voltage • Operation reaction time: 0.1 s maximum Ordering information Rated input voltage Order code 200 to 480 VACK8AK-PH1 Specifications Ambient operating temperature –20 to 60°C (with no condensation or icing) Storage temperature –25 to 65°C (with no condensation or icing) Altitude 2,000 m max. Input frequency50/60 Hz (AC power supply) Output relays (1 × DPDT, normally closed operation) Resistive load5 A at 250VAC or at 30 VDC Maximum contact voltage250VAC or 30 VDC Maximum contact current 5 A Maximum switching capacity 1,250 VA, 150W Mechanical life10,000,000 operations Electrical life 50,000 operations at 5 A, 250VAC or 30 VDC Degree of protection Terminal section: IP20 Case material PC and ABS WeightApprox. 130 g Rated input voltage Three-phase, three-wire mode, 200 to 480 VAC Reversed phase and phase loss operating time0.1 s max. Resetting methodAutomatic reset Overload capacity Continuous input: 528 VAC IndicatorsPower (PWR): Green LED, relayoutput (RY): Yellow LED Applicable standards Conforming standards EN 60947-5-1 Installation environment (pollution level 2, installation category III) EMC EN 60947-5-1 Safety standardsUL 508 (Recognition), Korean Radio Waves Act (Act 10564), CSA and CCC Size in mm (H × W × D) 90 × 22.5 × 100 645
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