適用范圍 Applicable scope

        JR28-200、630系列電子式熱繼電器適用于交流50/60Hz，額定電壓至660V，電流至30A的電路中，作為三相交流電動機的過載和斷相保護。該系列熱繼電器具有電流調節(jié)范圍廣，靈敏度高，能耗小，動作可靠的優(yōu)點，可以取代傳統(tǒng)的雙金屬片式熱繼電器。

        本產品符合GB14048,4，IEC60947-4標準。

       JR28-200,630 series of electronic thermal relay for AC 50 / 60Hz, rated voltage to 660V, current to 30A circuit, as three-phase AC motor overload and phase failure protection. The series of thermal relay with a wide range of current regulation, high sensitivity, low energy consumption, reliable operation, can replace the traditional bimetal thermal relay.

       This product complies with GB14048, 4, IEC60947-4 standards.

型號及其含義 Model and its meaning

正常工作條件和安裝條件 Normal working conditions and installation conditions

◇ 海拔高度：不超過2000mo

◇ 周圍空氣溫度-5℃~+40℃，24h內平均溫度不超過±35℃。

◇ 大氣條件：在+40℃時大氣相對濕度不超過50%，在較低溫度下可以有較高的相對濕度，最濕月的月平均溫度不超過+25℃，該月的月平均相對濕度不超過90%，并考慮因溫度變化發(fā)生在產品上的凝露。

◇ 安裝面與垂直面的傾斜度不超過±50 0

◇ 在無爆炸危險介質中，且介質中無足以腐蝕金屬和破壞絕緣的氣體及導電塵埃存在的地方。

◇ 在有防雨雪設備及沒有充滿水蒸氣的地方。

◇ 在無顯著搖動、沖擊和振動的地方。

◇ 污染等級為3級。

◇ Altitude: not more than 2000mo

◇ Ambient air temperature -5 ℃ ~ +40 ℃, 24h average temperature does not exceed ± 35 ℃.

◇ Atmospheric conditions: at +40 ℃ when the relative humidity of the atmosphere does not exceed 50%, at lower temperatures can have a higher relative humidity, the wettest monthThe monthly average minimum temperature does not exceed +25 ℃, the monthly average maximum relative humidity does not exceed 90%, and consider the temperature changes occurred in Condensation on the product.

◇ The inclination of the mounting surface to the vertical plane does not exceed ± 50 0

◇ in the absence of explosive media, and medium enough to corrode the metal and the destruction of the insulation gas and conductive dust exist.

◇ Where there is anti-snow equipment and not filled with water vapor.

◇ In the absence of significant shake, shock and vibration of the place.

◇ pollution rating of 3.

工作特性 Working characteristics

規(guī)格 Specification

外形及安裝尺寸 Shape and installation dimensions