适用范围 Applicable scope

        JR28-200、630系列电子式热继电器适用于交流50/60Hz，额定电压至660V，电流至30A的电路中，作为三相交流电动机的过载和断相保护。该系列热继电器具有电流调节范围广，灵敏度高，能耗小，动作可靠的优点，可以取代传统的双金属片式热继电器。

        本产品符合GB14048,4，IEC60947-4标准。

       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.

型号及其含义 Model and its meaning

正常工作条件和安装条件 Normal working conditions and installation conditions

◇ 海拔高度：不超过2000mo

◇ 周围空气温度-5℃~+40℃，24h内平均温度不超过±35℃。

◇ 大气条件：在+40℃时大气相对湿度不超过50%，在较低温度下可以有较高的相对湿度，湿月的月平均低温度不超过+25℃，该月的月平均相对湿度不超过90%，并考虑因温度变化发生在产品上的凝露。

◇ 安装面与垂直面的倾斜度不超过±50 0

◇ 在无爆炸危险介质中，且介质中无足以腐蚀金属和破坏绝缘的气体及导电尘埃存在的地方。

◇ 在有防雨雪设备及没有充满水蒸气的地方。

◇ 在无摇动、冲击和振动的地方。

◇ 污染等级为3级。

◇ 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

规格 Specification

外形及安装尺寸 Shape and installation dimensions