A contactor is a component that is needed to switch an electrical circuit on or off. It is said to be a part of the relay family, but the main difference is that they are used for applications or in circuits that need more current. To lighting circuits or electrical motors outside ac unit contactor are generally used to supply power.
Within an electrical system or electronic circuit, contactors include multiple contacts which are used to control other components and send signals. The contacts are usually normally opened but can be normally closed also. Typically, when the contactor coil has been energized, the contacts are used to supply the power to the load.
The presence of a high current load is the most common application for contactors. An example of this is the power supply to an electrical motor. When they are interrupted an electrical motor produces arcs. We minimize the number of arcs and control them to be safe by using a contactor.
Carrier ac contactor is designed so that they can get easily mounted and small so they can be fitted into control panels and circuits. In a range of different amp (A) ratings and voltage (V) ratings, they are available.
Major Components of a Contactor
Contactors are not just one component; they are prepared from a series of components. Three main components are needed by contactors. Below you can have a look at them:
Enclosure Or Body
A form of insulation and protection is provided by the enclosure of a contactor. This makes sure that with the contacts or coil the personnel will not come into contact. Generally, from a plastic such as a polycarbonate, the enclosure is prepared.
Contacts
The contacts are the part of the contractor and it carries the current. Several various contacts can feature inside/on a contactor, contact springs, aux or auxiliary contacts, and power contacts. Usually, the contact configuration of a contactor is open (NO) but can also be normally closed (NC).
Coil In the component, the coil is the most important part as it is the part that is needed to close the aircon contactor contacts. The coil is not visible as in an enclosure it is protected.
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