CDC18-24

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Contactors (Electromechanical)

Contactors, also known as electronic actuators, are a type of electromechanical switch used to control electrical devices in many applications, including industrial, automotive, domestic, and manufacturing. Commonly used in motor control, they are capable of switching current off and on during regular operations as well as managing current flow during exceptional conditions. This article will describe the application fields and working principle of contactors in the CDC18-24 range.

Application Fields

The CDC18/24 series of contactors are a type of 4-pole contactors designed to serve in various industrial, automation, and electrical control applications worldwide. The wide range of contactor ratings (2.1 to 30 kW) help it fulfill the break current, break voltage, and carry current requirements of different motors and electrical circuit protection mechanisms. In fact, this series of contactors is capable of managing the heavy load requirements of large-scale industrial machines and small home appliances as well.

These contactors are particularly suitable as an AC motor starter due to their high-speed switching capabilities and coil-saving mechanism. The high contact force provided by these contactors can handle normal and interrupted currents with ease, making them suitable for larger motor loads. Additionally, the design of their armature helps guarantee a long service life as these contactors can support long-term operation in harsh environmental conditions.

Working Principle

At its most basic, the functioning of contactors is fairly simple. A coil, usually electromagnetically powered, can generate an electromagnetic field when current passes through it. This field acts upon the armature, causing it to transition between two contact pairs (open and closed). When the armature is in the closed position, the motor is turned on; when it is in the open position, the motor is turned off. This process can be iterated either by altering the current that passes through the coil or by controlling the position of the armature itself.

The contact force generated by the contactors allows them to handle both normal and interrupted currents without trouble. Moreover, contactors in this series come with a built-in surge protection feature that helps them maintain their integrity and longevity under extreme load conditions. Finally, to guarantee minimal energy loss, the contactors come with voltage-independent switching, allowing for a more efficient motor control.

The combination of all these features makes contactors of the CDC18-24 series an ideal choice for effective and efficient motor control in many industrial and home applications. Furthermore, their superior design and rugged build-quality make them suitable for use in harsh conditions as well.

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