Eleman prensipal nan yon kontakteur

Yon kontakè sitou konsiste de yon sistèm elektwomayetik, yon sistèm kontak, yon aparèy etenn arc -, ak eleman oksilyè. Pati sa yo travay ansanm pou fè fonksyon kontwòl ak pwoteksyon yon sikwi. Sistèm elektwomayetik la se nwayo kontakè a, prensipalman ki gen ladann yon bobin, yon nwayo fè, ak yon armati. Lè bobin la kouran, li jenere yon fòs elektwomayetik ki atire armati a, sa ki lakòz kontak yo fèmen oswa louvri, kidonk konekte oswa dekonekte kous la.

The contact system is the crucial component of the contactor directly responsible for conducting electricity. It is typically divided into main contacts and auxiliary contacts. Main contacts are used to connect and disconnect the main circuit and can carry a large current; auxiliary contacts are mainly used for control circuits, signal interlocking, and status feedback. To improve the conductivity and lifespan of the contacts, modern contactors often use wear-resistant and arc-resistant materials such as silver alloys to manufacture the contacts.

The arc-extinguishing device and other auxiliary accessories also play a vital role in the normal operation of the contactor. When the contactor disconnects the circuit, an electric arc is generated. The arc-extinguishing hood and arc-extinguishing grid can quickly extinguish the arc, reducing contact burn-out. In addition, contactors are equipped with accessories such as return springs, insulating housings, terminals, and auxiliary modules to ensure sensitive operation, easy installation, and safe operation. With the development of intelligent technology, some new contactors have also added electronic protection modules and communication modules to meet the needs of automated control systems.