cjx1(3tb、3tf)系列交流接触器主要适用于交流50hz(60hz)，额定电压至660v，在ac-3使用类别下其额定电压380v时，工作电流至630a的电路中。供远距离接通和分断电路及频繁起动和控制交流电动机，并可与当的热(过载)继电器组成电磁起动器，以保护可能发生操作过负荷的电路。符合标准:iec947-4-1、gb14048.43tfseriesaccontactoraresuitableinelectricalsystemwithac50/60hz,ratedoperationalvoltageupto660v,inac-3usage,ratedoperationalvoltageupto380v,ratedoperationalcurrentupto630atomakeorbreakremotemotosorsystem.theformelectromagneticstarterswithsuitablethermaloverloadorphase-failure.thearemodeaccordingtoiec947.bs5424&；vde0660.thecontactorisastraightmotionmechanismhavingdouble-breakingcontacts.theauxiliarycontactsarearranged2no.2ncatmost,itisemployedtheflexiblelockingconnectionbe-tweenthecontactsupportandcore,threearenoarcisolatedpanleinthele&ge；32acontacotors,therearemouldedarc-chutewitharcisolatedpanel,becauseallcontactsaremadeofhighnonfusibilityandagainstcorrosionsilveralloy.allseriesproductscanbemountedbyscrews,le&le；32acontactoralsobyinstallationrail.