... , reactive energy. - Current and voltage ratios set freely. - Up to 3 alarm relays, contact capacity: AC 250V/3A or DC ... 50/60HZ, power consumption<5VA. - Applications: applied in electrical power systems for auto control, e. g.: single/three phase current/voltage ... 85% RHWeight450g, G.WWelcome to contact us ! IBEST ELECTRICAL CO.LTD IBEST DW8 Single Phase Series , Up to 3 Alarms , Digital Coulo Meter