Features: Adjustable Voltage Regulator Module: MCTFW6309FLess than 1% voltage regulation accuracy; 220/400VAC inputStrong and ; With low frequency protection functionSlow start;Built-in harmonic suppressorBuilt-in 8A fuseTechnical ParametersSampling input 220/400VAC (short-circuit switch)Voltage input 180-276VACExcitation output voltage Maximum 90VDC@240vContinuous current 5ANon-continuous 8A10 secondsResistor minimum 15 ohmsVoltage regulation accuracy is less than +/-1% (frequency changes within 4%)The voltage establishment residual magnetization voltage must be 5V25 HzExternal voltage adjustment maximum +/-10%@1K1W potentiometerVoltage build-up time 4 secondsStatic power consumption maximum 8 W built-in harmonic suppressorLow frequency protection 50Hz knee value is 46 Hz60Hz knee value is 56 HzOverexcitation protection factory default value 75VDCSimulation voltage input (A1, A2)Input impedance 2 KMaximum input +/- 5 or + 0 -10 Sensitivity 5% per 1 (TRIM adjustable)nvironmentVibration 3G@100~2K Hz Relative Humidity Less than 95%Operating Temperature -40~65 Storage Temperature -40~85Tips: The product may be updated constantly, The Actual Product May Have Slight Differences Or Color Differences the color and appearance may be changed, please don't mind. And take a consideration before place the order if you have request for color or appearance.Material: Plasticcolour: As shownPackage Contents:1 x Adjustable Voltage Regulator ModuleOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.