型號(hào):JD-501S保護(hù)功能:過(guò)載、斷相及三相不平衡保護(hù)負(fù)載電流或負(fù)載功率范圍:1-20A(0.5~10KW)20-50A(10~25KW)40-80A(20~40KW)50-100A(25~50KW)過(guò)載時(shí)間(反時(shí)限):3~60S斷相動(dòng)作時(shí)間: 2s三相電流不平衡(相差50%時(shí)): 2s堵轉(zhuǎn)時(shí)間(>6Ie): 0.3s復(fù)位:斷電復(fù)位保護(hù)觸電:1組常閉觸點(diǎn)