These state-of-the-art panel meters are designed for accurate measurement of the AC RMS voltage, AC RMS current, frequency, active power and power factor in single-phase systems. Although they are mainly used in electrical panels, these devices can also be integrated in many other applications. The current transformer ratio can be set between 5/5A and 5000/5A via front panel buttons. Devices have separate inputs for supply and measurement. The unit allows both manual selection of the display channel and automatic scrolling. TECHNICAL SPECIFICATIONS: Power Supply Input: 170 - 275VAC 50 - 60Hz nominal (± 10%) Different AC/DC supply values available. Measurement Inputs: 10 - 300 V AC 0.2 - 5.50 A AC 30 - 100 Hz Accuracy: Volts-Amps-Hz: 0.5% + 1 digit kW : 1.0% + 2 digits cos: 0.5% + 2 digits Power Consumption: < 1.5W Burden: Voltage input: < 0.1VA per phase Current input: < 1VA per phase Operating Temperature: -40°C ;+70 °C Maximum Humidity: 95% non-condensing. Degree of Protection: IP 54 (Front Panel) IP 30 (Back panel) Enclosure: Non-flammable, ROHS compliant, high temperature ABS/PC (UL94-V0) Installation: Flush mounting with rear retaining brackets Dimensions: 78x78x41mm (WxHxD) Panel Cutout Dimensions: 68x68mm Weight: 145 gr EU Directives Conformity: 2006/95/EC (low voltage) 2004/108/EC (EMC) Norms of reference: EN 61010 (safety requirements) EN 61326 (EMC requirements) WE DO NOT SHIP THIS PRODUCT TO USA AND CANADA