The contactor is mainly composed of a drive system, a contact system, an arc extinguishing system and other parts.
1. Drive system: The drive system includes electronic modules, soft iron, and permanent magnets, which is an important part of the permanent magnet contactor, relying on it to drive the closing and disconnection of the contact.
2. Contact system: The contact is the fulfillment part of the contactor, including the main contact and the auxiliary contact. The function of the main contact is to turn on and break the main circuit and control the larger current, while the auxiliary contact is in the control circuit to meet the requirements of various control methods.
3. Arc extinguishing system: Arc extinguishing equipment is used to ensure that when the contact is disconnected from the circuit, the arc generated is reliably calmed and the damage of the arc to the contact is reduced. In order to quickly calm the arc when disconnected, the contactor is generally equipped with arc extinguishing equipment, and the semi-sealed longitudinal seam clay arc extinguishing cover is generally selected, and is equipped with a strong magnetic arc blowing circuit.
4. Other parts: insulated shells, springs, transmission mechanisms, etc.
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