MRX204-A

Series:	MR
Part Status:	Active
Number of Positions:	2 ~ 4
Index Stops:	Adjustable
Number of Decks:	1
Number of Poles per Deck:	2
Circuit per Deck:	DP4T
Contact Timing:	Non-Shorting (BBM)
Current Rating:	2A (AC), 1A (DC)
Voltage Rating - AC:	125V
Voltage Rating - DC:	30V
Actuator Type:	Knob
Actuator Length:	13.00mm
Angle of Throw:	45°
Contact Material:	Silver Alloy
Contact Finish:	--
Mounting Type:	Panel Mount, Through Hole
Termination Style:	PC Pin
Features:	Sealed - Flux Protection
Depth Behind Panel:	27.30mm
Panel Cutout Dimensions:	Circular - 6.35mm Dia
Operating Force:	3.059 ~ 15gfm

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Introduction

Rotary switches are widely used in a wide range of applications. They are available in single, two and four pole configurations, as well as being designed with a variety of contacts such as normally open, normally closed, and changeover. The MRX204-A is a type of rotary switch specifically used for controlling the reception of signal transmissions and is particularly suited for use in instrumentation, telephone and data communications applications. In this article, we will discuss the application field and working principle of this particular rotary switch.

Application Field

MRX204-A rotary switches are generally used for impedance matching applications. This is because the switch is designed with a resistive switching element, which makes it suitable for products where impedance is crucial. The switches are also often used in multi-conductor applications, where they provide the necessary isolation between circuits. They are also commonly found in a variety of instrumentation applications, such as radio navigation and navigation aids, laboratory equipment, medical equipment, and automatic test equipment.

Working Principle

The working principle of the MRX204-A is based on the magnetic interaction between two contacts. When in the "on" position, the contact surfaces are forced together by a permanent magnet. This binding action creates contact points that are electrically knitted together. When the switch is in an "off" position, not all contact surfaces line up, thus preventing electrical conductivity. The movement of the switch lever from one position to another is achieved by the application of physical force. The lever rotates around a pivot point and the contact surfaces are held in contact by the permanent magnet.

Conclusion

The MRX204-A rotary switch provides reliable operation in applications where impedance matching is essential.They have been specifically designed with a resistive switching element for unmatched contacts in multiple conductor applications such as radio navigation and medical equipment. The working principle of this switch is based on the magnetic interaction between two contacts, which ensure electrical conductivity.

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