另一半是活動鐵芯，構造和固定鐵芯一樣，用以帶動主接點和接點的閉合斷開。
20A以上的接觸器加有滅弧罩，利用電路斷開時產生的電磁力，快速拉斷電弧，保護接點。
接觸器可高頻率操作，做為電源開啟與切斷控制時﹐高操作頻率可達每小時1200次。
接觸器的使用壽命很高，機械壽命通常為數百萬次至一千萬次，電壽命一般則為數十萬次至數百萬次。
技術發展
3TH30310XM0
3TH30310XN2
3TH30310XP2
3TH30310XQ0
3TH30310XR0
3TH30310XR1
3TH30310XS0
3TH30310XU0
3TH30311XB4
3TH30311XC4
3TH30311XE4
3TH30311XF4
3TH30311XM4
3TH30311XV4
3TH30311XW4
3TH30400XB0
3TH30400XC1
3TH30400XC2
3TH30400XD2
3TH30400XF0
3TH30400XG2
3TH30400XJ2
3TH30400XK1
3TH30400XL2
3TH30400XM0
3TH30400XM2
3TH30400XN2
3TH30400XP0
3TH30400XP2
3TH30400XQ0
3TH30400XR1
3TH30400XS0
3TH30400XU0
3TH30401XB4
3TH30401XE4
3TH30401XF4
3TH30401XM4
3TH30401XV4
3TH40040XB0
3TH40040XC0
3TH40040XC1
3TH40040XD0
3TH40040XD2
3TH40040XE0
3TH40040XF0
3TH40040XG0
3TH40040XG1
3TH40040XH0
3TH40040XJ1
3TH40040XJ2
3TH40040XK1
3TH40040XK2
3TH40040XL0
3TH40040XL1
3TH40040XM0
3TH40040XM1
3TH40040XM2
3TH40040XN1
3TH40040XP0
3TH40040XP2
3TH40040XR0

3SU19010FS500AA0ZY11
3SU19010FS500AA0ZY12
3SU19010FS500AA0ZY13
3SU19010FS500AA0ZY15
3SU19010FS500AA0ZY19
3SU19010FS700AA0
3SU19010FS700AA0ZY10
3SU19010FS700AA0ZY11
3SU19010FS700AA0ZY12
3SU19010FS700AA0ZY13
3SU19010FS700AA0ZY15
3SU19010FS700AA0ZY19
3SU19010FT000AA0
3SU19010FT000AA0ZY10
3SU19010FT000AA0ZY11
3SU19010FT000AA0ZY12
3SU19010FT000AA0ZY13
3SU19010FT000AA0ZY15
3SU19010FT000AA0ZY19
3SU19010FT200AA0
3SU19010FT200AA0ZY10
3SU19010FT200AA0ZY11
3SU19010FT200AA0ZY12
3SU19010FT200AA0ZY13
3SU19010FT200AA0ZY15
3SU19010FT200AA0ZY19
3SU19010FT300AA0
3SU19010FT300AA0ZY10
3SU19010FT300AA0ZY11
3SU19010FT300AA0ZY12
3SU19010FT300AA0ZY13
3SU19010FT300AA0ZY15
3SU19010FT300AA0ZY19
3SU19010FT400AA0
3SU19010FT400AA0ZY10
3SU19010FT400AA0ZY11
3SU19010FT400AA0ZY12
3SU19010FT400AA0ZY13
3SU19010FT400AA0ZY15
3SU19010FT400AA0ZY19
3SU19010FT500AA0
3SU19010FT500AA0ZY10
3SU19010FT500AA0ZY11
3SU19010FT500AA0ZY12
3SU19010FT500AA0ZY13
3SU19010FT500AA0ZY15
3SU19010FT500AA0ZY19
3SU19010FT600AA0
3SU19010FT600AA0ZY10
3SU19010FT600AA0ZY11
3SU19010FT600AA0ZY12
3SU19010FT600AA0ZY13
3SU19010FT600AA0ZY15
3SU19010FT600AA0ZY19
3SU19010FT700AA0
3SU19010FT700AA0ZY10
3SU19010FT700AA0ZY11
3SU19010FT700AA0ZY12
3SU19010FT700AA0ZY13
3SU19010FT700AA0ZY15
3SU19010FT700AA0ZY19
3SU19300FA800AA0
3SU19500DK800AA0
3SU19500DL800AA0
3SU19500DM800AA0
3SU19500DN800AA0
3SU19500DP800AA0
3SU19500DQ800AA0
3SU19500DR800AA0
3SU19500DS800AA0
3SU19500DT800AA0
3SU19500DU800AA0
3SU19500DV800AA0
3SU19500DX300AA0
3SU19500DX800AA0
3SU19500FA800AA0
3SU19500HJ100AA0
3SU19500HK100AA0
3SU19500HL100AA0

半導體接觸器：半導體接觸器是一種通過改變電路回路的導通狀態和斷路狀態而完成電流操作的接觸器。
永磁接觸器：永磁交流接觸器是利用磁極的同性相斥、相吸的原理，用永磁驅動機構取代傳統的電磁鐵驅動機構而形成的一種微功耗接觸器。
3TH40311XM4
3TH40311XV4
3TH40311XW4
3TH40400XB0
3TH40400XC2
3TH40400XD0
3TH40400XD2
3TH40400XE0
3TH40400XF0
3TH40400XG0
3TH40400XG1
3TH40400XJ1
3TH40400XK2
3TH40400XL0
3TH40400XL2
3TH40400XM0
3TH40400XN2
3TH40400XP0
3TH40400XQ0
3TH40400XR0
3TH40400XR2
3TH40400XU0
3TH40401XB4
3TH40401XC4
3TH40401XE4
3TH40401XF4
3TH40401XM4
3TH40401XP4
3TH40401XW4
3TH42440XB0
3TH42440XD0
3TH42440XF0
3TH42440XG0
3TH42440XG1
3TH42440XG2
3TH42440XJ2
3TH42440XK1
3TH42440XK2
3TH42440XL1
3TH42440XL2
3TH42440XM0
3TH42440XM000AF0
3TH42440XN1
3TH42440XN2
3TH42440XP0
3TH42440XP2
3TH42440XQ0
3TH42440XU0
3TH42440XV0

直流電流與交流電流相比較，不存在周期性的電流數值過零點，因此，傳統接觸器開斷電路時，觸頭之間產生的電弧較為強烈，燃弧時間也比較長，以便充分釋放電路中剩余的能量。電弧的燃燒產生高溫和強光，對觸頭表面有嚴重的燒蝕作用，觸頭材料在多次開斷之后逐漸流失，觸頭電磨損嚴重時，導致直流接觸器報廢，不能開斷電路。 [1] 
電力電子技術得以迅猛發展，人們將電力電子元件應用到直流接觸器中，巧妙的創造出一種混合式直流接觸器，使得直流接觸器向智能化、可控化邁進了新的一步。這種混合式接觸器利用傳統直流接觸器在閉合導通狀態下觸頭接觸電阻小、導通壓降小的優點，將由反并聯晶閘管和控制模塊單元共同組成的無觸點開關并聯在傳統直流接觸器觸頭上。這種無觸點的電力電子開關分斷電路時不產生電弧，這就避免了傳統接觸器中電弧對觸頭材料的電磨損，也就大大增加了觸頭的使用壽命和可靠性。 [1] 
直流接觸器永磁機構
3TH42620XB0
3TH42620XC2
3TH42620XD0
3TH42620XF0
3TH42620XG2
3TH42620XH0
3TH42620XJ1
3TH42620XJ2
3TH42620XK2
3TH42620XL1
3TH42620XL2
3TH42620XM0
3TH42620XM1
3TH42620XM2
3TH42620XN2
3TH42620XP0
3TH42620XQ0
3TH42620XR2
3TH42620XS0
3TH42620XU0
3TH42621XB4
3TH42621XC4
3TH42621XE4
3TH42621XF4
3TH42621XM4
3TH42621XP4
3TH42621XV4
3TH42621XW4
3TH42710XB0
3TH42710XC0
3TH42710XD0
3TH42710XG0
3TH42710XG1
3TH42710XH0
3TH42710XJ1
3TH42710XJ2
3TH42710XK1
3TH42710XK2
3TH42710XL0
3TH42710XL1
3TH42710XM0
3TH42710XM1
3TH42710XM2
3TH42710XN1
3TH42710XP0
3TH42710XQ0
3TH42710XR1
3TH42710XR2
3TH42710XS0
http://m.gw91.cn