Actuator Type:	Flatted (3.17mm Dia)
Operating Force:	5.761 ~ 17gfm
Panel Cutout Dimensions:	Circular - 6.45mm Dia
Depth Behind Panel:	18.77mm
Features:	--
Termination Style:	Solder Lug
Mounting Type:	Panel Mount
Contact Finish:	Gold
Contact Material:	--
Angle of Throw:	30°
Actuator Length:	9.53mm
Series:	51
Voltage Rating - DC:	28V
Voltage Rating - AC:	115V
Current Rating:	150mA (AC), 200mA (DC)
Contact Timing:	Non-Shorting (BBM)
Circuit per Deck:	3P4T
Number of Poles per Deck:	3
Number of Decks:	1
Index Stops:	Fixed
Number of Positions:	4
Part Status:	Active

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Introduction to Rotary Switches

Rotary switches are electrical switches that are used to control the flow of electrical current in a circuit and provide a wide range of alternative circuits. They are commonly used in home, automotive and industrial applications. Rotary switches are typically seen in a variety of applications from simple single-pole switches, to complex multiple-pole switches, to switches with a wide array of alternative settings and uses.

51A30-01-3-04N Application Field and Working Principle

The 51A30-01-3-04N from Grayhill is a non-shorting, single-pole double-throw (SPDT) rotary switch. This rotary switch is designed for use in low-voltage signal transfer and switching applications. It offers up to 60 switch positions and has a voltage rating of 30 VDC and 0.25 A current rating. It is also highly resistant to temperature and humidity changes, making it an ideal choice for challenging environments such as aviation, laboratory instruments, and medical equipment.The 51A30-01-3-04N is a DC rated switch with a three pole configuration. Each pole can switch up to three different circuits, making it an ideal choice for applications requiring multiple control points. It has an operation life of up to 5,000 cycles and comes in a variety of cap sizes and styles. Its rotary action is smooth and operates with minimal pressure, making it ideal for applications such as lighting control, fan speed control, and even air flow control in air conditioning systems.The working principle of the 51A30-01-3-04N is relatively simple. The switch operation involves the rotating of a spindle, which in turn connects the terminals at each of the switch positions. When the spindle is rotated, the contact points at each respective position are engaged and the corresponding circuits are actuated. This is repeated each time the spindle is rotated.The 51A30-01-3-04N is a versatile, versatile switch that is suitable for a variety of applications. Its high operational life and reliability make it an ideal choice for applications requiring frequent switching. Thanks to its wide range of switch positions and DC current rating, it is also ideal for applications requiring multiple control points.

Conclusion

Rotary switches are versatile devices used to control and manage electrical current in a variety of applications. The 51A30-01-3-04N from Grayhill is a great example of a reliable, versatile rotary switch. It offers a wide range of switch positions and its smooth action makes it ideal for demanding applications such as lighting control and air flow control. Thanks to its high operational life and solid construction, it is a great choice for applications requiring frequent switching.

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Part Number	Manufacturer	Price	Quantity	Description