21011009019

21011009019 Application Field and Working Principle

The 21011009019 is a multi-purpose contact component. It is applied for making or breaking the electric circuit under the condition of rated current up to 400A and with a rated voltage of 440V AC. This durable contact is made with solid silver material and can be used for a range of applications.

Applications

The 21011009019 has a wide range of applications, from motor starters, starter switches, general control switch, battery switches, and panel-mount switches for positive operation. It is also applicable for AC contactors, rotary switches, thermal magnetic switches, and more. In addition, it can be used to control air or liquid valve and pump actuators. Therefore, it is a versatile contact element that is widely used in the process industry.

Working Principle

The 21011009019 is composed of two contact pieces and two springs, which are all put together in a housing. When the contact pieces are open, the contact circuit is off. When the contact is closed, it is on. The basis of its working is the stresses produced by the springs and the contact pieces in two different contact positions.

Specifically, when the contact pieces are located in the open position, a tension force is produced by the springs that keeps the pieces in place. When the contact pieces are in the close position, a compression force is produced. This compression force holds the two contact pieces together and, this makes a solid contact connect with the external circuits.

Conclusion

The 21011009019 is a multi-purpose contact component applied for making or breaking the electric circuit with a rated current up to 400A and voltage up to 440V AC. It is widely used in the motor starter, starter switches, general control switch, and more. Its working principle is based on the stress produced by the contact pieces and springs.