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產品名稱：電動機保護繼電器
型號：NJBK7
NJBK7-800系列電動機保護繼電器（以下簡稱保護器），適用于交流頻率50Hz、額定絕緣電壓至AC690V以下、額定工作電流1A～800A的長期工作或間斷工作的交流電動機的過載、阻塞、斷相、三相不平衡、欠流、接地、PTC溫度、通訊故障等保護。該保護器具有RS485接口，4mA～20mA模擬量變送接口，可以組網通信，通過上位機對電機實現(xiàn)遠程監(jiān)視、控制、故障查詢等功能。大電流規(guī)格采用柔性的羅式線圈采集電流，具有整定電流范圍廣，精確度高、安裝方便等優(yōu)點。保護器一般與交流接觸器配合使用。
產品符合標準：GB/T 14048.4、IEC60947-4-1。
- 品牌 正泰
- 分類 電機保護斷路器
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