CJX2-1854 shine samfurin tuntuɓar sandar sandar sandar sandar igiya huɗu.Na'urar lantarki ce da aka saba amfani da ita don sarrafa kashe kashe da'ira.
Matakan lamba huɗu na lambar ƙirar suna nufin cewa mai tuntuɓar zai iya kunna ko kashe matakai huɗu na halin yanzu a lokaci guda.CJX yana nufin “Ac contactor”, kuma lambobin da ke biyo baya suna wakiltar ƙayyadaddun bayanai da bayanan sigina na samfurin (misali, rated irin ƙarfin lantarki, aiki halin yanzu, da dai sauransu).A cikin wannan misali, CJX2 yana nufin cewa shi ne mai lamba AC guda biyu, yayin da 1854 yana nufin cewa an ƙididdige shi a 185A.