INPUT The wires carrying the three currents have to pass through the holes (Ø 14 mm) of the device. No specific order is to be followed. SINGLE RANGE: 2÷80A. For currents lower than 2A, it is necessary to make more wirings through the CT hole. OUTPUT Change over contact 5A230V - resistive load. SUPPLY 2VA -50-60 Hz - Tolerance±15% 1-3: 24Vac, 24Vdc, 230 Vac WORKING TEMPERATURE: 0÷70°C WEIGHT: kg 0,360 - COLOUR: grigio SIZE 70x75X110 mm - DIN rail - E 405B

FUNCTION By means of three built-in current transformers (CT) the unit detects the presence of the three phases (typically in a motor). It can be applied on the currents generated by speed controls for AC motors (inverter). Example: in case of more than one AC motor driven by the same speed control, see fig. 2. USE A3-06 works on the current principle and is not affected by the “return voltages” and consequently its performance is more accurate than that of voltage relays.

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