Frame Aluminium alloy die-casting, surfaces is finished by black anti-corrosion treatment. Impeller Black plastic PBT UL94V-0 Operation Temperature/Humidity Range: (under unconcretionary state) -30ºC ~ +60ºC (temperature), 0% ~ 95% (himidity) Protection Impedance Protected Withstand Voltage AC 1,800V , 1 min at 0.5mA, 50/60 Hz Insulation System Design according to IEC61858 Grade B, Protection Grade IP34
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