Each type of contact has an individual role to play. There are different types of contacts in a contactor namely, contact springs, auxiliary contacts, and power contacts.

The current carrying task of the contactor is done by the contacts. Contacts: This is yet another important component of this electrical device.Generally, the open-frame contactor features an additional enclosure, which protects the device from bad weather, hazards of explosion, dust, and oil. The protective enclosure is made from different materials, such as polycarbonate, polyester, Nylon 6, Bakelite, thermosetting plastics, and others. Enclosure: Just like the enclosures used in any other application, contactors also feature an enclosure, which provides insulation and protection from personnel touching the contacts.The coil or electromagnet and contacts are protected by an enclosure. The driving force that is required to close the contacts is provided by the coil or electromagnet of the contactor. Coil or Electromagnet: This is the most crucial component of a contactor.The following three are crucial components of the contactor: These arcs can be reduced and controlled using a contactor. Heavy motor currents produce arcs when being interrupted. Contactors are known for their capability to handle currents of over 5000 amperes and high power over 100 kW. The most common application area of the contactor is high-current load. In addition, these electrical devices come in varying sizes, from hand-held dimensions to sizes measuring a meter or yard on one side (approximately). Contactors can break current over a wide range of currents, from a few amperes to thousands of amperes, and voltages from 24 VDC to thousands of volts. There are various types of contactors, and each type has its own set of features, capabilities, and applications. Contactors are most commonly used for controlling electric motors. These contacts are in most cases normally open and provide operating power to the load when the contactor coil is energized. Generally, these electrical devices feature multiple contacts. Contactors can be field mounted easily and are compact in size. However, the basic difference between the relay and contactor is that the contactor is used in applications with higher current carrying capacity, whereas the relay is used for lower current applications. It is considered to be a special type of relay. A contactor is an electrical device which is used for switching an electrical circuit on or off.

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