China Best 1250 Amp Mccb Company – JD-5, JD-6 Motor Integrated Protector – CNC Electric

Operating conditions

• Altitude ≤2000m.
• Ambient temperature Range: -5℃ ~ +40℃, with daily average ≤ +35℃.
• Atmospheric condition: when the highest temperature is +40℃, the relative humidity of air shall be no more than 50%, higher relative humidity shall be allowable at lower temperature, for instance air humidity may reach 90% at +20 ℃. As for dews, which contigently appear due to change of temperature, special steps should be taken.
• Pollution Level: Level 3.
• Inclination between installation plane and vertical plane shall ≤±5°.
• In the media without explosive risk, and no gases that may be corrosive to metal and damage insulation in the media together with at places where much conducting dust being in existence.
• At places where rain & snow proof facilities are equipped with and not being full of steam.
• At places without prominence rock, impact and vibration.
• Installation Category: III