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Rotary Switches

Rotary switches are used in a wide range of applications, from electronic appliance and circuitry control to audio equipment and lighting solutions. As its name implies, they are twister-type switches operated by a knob or handle that controls one or more mechanical contacts. An example of this type of switch is the 56SP30S-01B03N.

Application Field

The 56SP30S-01B03N is a DPDT (Double Pole Double Throw) rotary switch. This type of switch allows the rotation of a knob or handle to control two separate circuits. One such application is in circuit boards and stereo equipment, controlling the reception and transmission of signals. Additionally, they can be used in pumps, machinery and lighting systems requiring multiple power sources or a combined functionality. In every location where a traditional toggle or push-button switch may be used, a rotary switch can also be implemented.

Working Principle

The 56SP30S-01B03N has two sets of connection terminals that consist of three contact points per side. Each set of contact points is called a pole. With two poles and multiple contact points, the switch can be used to control two separate electrical circuits. The mechanical function is provided by either a knob or a handle depending upon the application\'s requirements. The knob or handle is connected with a shaft which is connected to a set of cam surfaces inside the switch housing. As the knob or handle is rotated, the cam surfaces make contact with the contact points and the rotary switch is triggered.

The 56SP30S-01B03N can be configured to open or close contacts when rotated, as desired for various applications. Moreover, it can be designed for momentary or maintained contact closure, to keep the circuit engaged after the knob or handle has been released and to provide a burst contact closure. Depending on the application type, the 56SP30S-01B03N may also be equipped with dust and weatherproof protection.

Conclusion

The 56SP30S-01B03N is a versatile rotary switch that can be used to control multiple electrical circuits. Its two-pole design makes it suitable for applications requiring switching between two circuits or combining two electrical functions. The switch features potential different configurations, ranging from momentary contacts functioning to maintained contacts and dust/weatherproof protection. The 56SP30S-01B03N rotary switch demonstrates multiple advantages of this practical and cost-efficient switch technology.

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