Electromagnetic contactors yog cov khoom siv hluav taws xob ua haujlwm nyob deb tsim los rau kev ua haujlwm tsis tu ncua nrog kev hloov ntawm / tawm cov kab hluav taws xob. Hauv electromagnetic contactors, cov txheej txheem hloov pauv yog nqa tawm siv lub tshuab hluav taws xob electromagnetic