LYD105A HITACHI 触头闭合

HITACHI LYD000A
HMS AB7006-B
HMS AB7006-B
HMS AB7006
HMS AB7006-B
HMS AB7006
HMS AB7000-C
HMS AB7000-C
HOERBIGER P8 385RF-NG-SPT63-B
HOLLYSYS FM143
HONEYWELL TC-FPCXX2
HONEYWELL TK-PRR021
HONEYWELL 05701-A-0302
HONEYWELL 05701-A-0302
HONEYWELL 05701-A-0302

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Description

当SQ2接通KM回路时,KM的主触头闭合的同时,与SQ2并联的一对常开触头也闭合了,等到撞块离开SQ2而使SQ2I常开断开时,KM线圈也不会失电,而继续保持得电状态,用接触器自己的动作来保持其得电状态的功能称自保(或自锁),该常开触头叫自保(或自锁)触头。

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