Rotary Switches

This Product Selection Guide contains information to help select products in the Rotary Switches category on DigiKey.com

Rotary switches are mechanical devices that make or break a series of electrical connections by the closing or opening electrical contacts as the shaft is rotated by human or mechanical interaction. Rotary switches are selected by the number of positions, number of decks, poles per deck, mounting type, contact circuit configuration, throw angle, actuator type and current and voltage ratings. Some rotary switches include adjustable stops or can rotate continuously.


SelectionCharacteristics

Number of Positions: The number of switch modules contained within a product as sold; the number of switches in an array.

Index Stops: Indicates whether mechanical limits on actuator rotation are fixed, user adjustable, or not present.

Number of Decks: The quantity of modular contact layers combined to form the switch.

Number of Poles per Deck: The number of parallel switch elements (poles) implemented on each modular layer (deck) of the switch.

Circuit per Deck: Indicates the switch configuration (number of poles and throws) implemented on each sub-level (deck) of the switch.

Contact Timing: Indicates whether or not adjacent contacts for a given pole are interconnected briefly as the actuator is moved between positions.

Current Rating (Amps): Typically this represents the maximum current to which a device will meet its given specifications. Exceeding this current may damage the device and/or other system components.

Voltage Rating - AC: Typically this represents the maximum AC voltage rating to which a device will meet its given specifications. Exceeding this voltage rating may damage the device and other system components.

Voltage Rating - DC: Typically this represents the maximum DC voltage rating to which a device will meet its given specifications. Exceeding this voltage rating may damage the device and other system components.

Actuator Type: The specific design or style of the mechanism used to change the switch position.

Actuator Length: The length of the shaft or protrusion that serves as the mechanical interface for adjusting a device setting or value.

Angle of Throw: The amount of actuator rotation between adjacent switch positions.

Contact Material: The material used for switch contacts.

Contact Finish: Identifies the surface finish material present on a device’s electrical contacts.

Mounting Type: Indicates how the device is attached.

Termination Style: Selection of termination style used to connect the device to a system, such as PC pins or wire leads.

Features: These are different capabilities or properties of the device such as IP ratings or no common pin.

IP Ratings

IP (Ingress Protection) ratings such as (IP20, IP65, IP67, etc.) define how likely water and dirt will get into the system. The first number represents dirt and solid contaminants while the second represents water and liquids.

Solids Liquids
1 Protected against solids larger than 50mm. Protected against vertically falling drops of water. Limited Ingress permitted.
2 Protected against solids larger than 12.5mm. Protected against vertically falling drops of water with the enclosure tilted up to 15 degrees from vertical. Limited ingress permitted.
3 Protected against solids larger than 2.5mm. Protected against spraying water up to 60 degrees from vertical. Limited ingress permitted for 3 minutes.
4 Protected against solids larger than 1mm. Protected against water splashed from any direction. Limited ingress permitted.
5 Protected against dust. Limited ingress of dust permitted. Will not affect operation of equipment 2-8 hours. Protected against jets of water. Limited ingress permitted.
6 Dust tight. No ingress of dust 2-8 hours. Protected against powerful jets of water. Limited ingress permitted.
7 ______________________ Protected against the effects of immersion in 15cm-1m for 30 minutes.
8 ______________________ Continuous immersion in water up to 3m for long periods of time.
9 ______________________ Protected against high pressure jets of hot water. (30 seconds)
9K ______________________ Protected against high pressure jets of hot water. (2 minutes)

Depth Behind Panel: The distance between a panel mount bearing surface and the furthest rearward projection of the switch body, excluding electrical contacts.

ProductExamples
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MFR PART # NR01103ANG13-2C
DIGI-KEY PART # 360-3628-ND
MANUFACTURER NKK Switches
DESCRIPTION Rotary Switch 3 Position SP3T 0.4VA (AC/DC) 28 VAC Through Hole
DATASHEET Click Here

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MFR PART # MRA112-CB
DIGI-KEY PART # 360-3151-ND
MANUFACTURER NKK Switches
DESCRIPTION Rotary Switch 2 ~ 12 Position SP12T 250mA (AC) 125 VAC Panel Mount, Through Hole
DATASHEET Click Here

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MFR PART # 75AP36-01-1-08N
DIGI-KEY PART # GH7362-ND
MANUFACTURER Grayhill Inc.
DESCRIPTION Rotary Switch 8 Position SP8T 200mA (AC/DC) 115 VAC Through Hole
DATASHEET Click Here

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MFR PART # NDS-01N-CS
DIGI-KEY PART # 3094-NDS-01N-CS-ND
MANUFACTURER Future
DESCRIPTION Rotary Switch 12 Position BCD 50mA (AC), 250mA (DC) 50 VAC Panel Mount
DATASHEET Click Here

SchematicSymbol
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Schematic symbol courtesy of Scheme-it. Please see their website for more information and symbols.

MediaLinks

Product Training Modules
NR01 Submini Process Sealed Rotaries - NKK
Rotary Switches & Mechanical Encoders - Grayhill
Rotary Switch Design - Electroswitch

TechForum
Why does my rotary switch not have a common pin?
Shorting vs Non Shorting on rotary switches
Rotary Switch Identification

If you have any general questions on the specifications for selecting Rotary Switches, please reply using the button below. If you have questions on specific Rotary Switches please post those questions in the Electromechanical Switches category.

I’m looking for a rotary switch (ideally 8 positions) that also has push button functionality - similar to how many rotary encoders have. I can’t seem to find this spec.

Hello adbern,

Welcome to the DigiKey tech forum community:

Unfortunately I wasn’t able to find much within our catalogue.
Only one I was able to find that is pushable is 481RV12172100-ND. In the data sheet it shows that the function of the pushbutton is DPDT momentary. Seems we don’t have any others to offer that are rotary ones and push button ones.

Hope that helps.

Hi,

I’m on the hunt for 1 pole, 11 position rotary switches to replace some Jean Renaud ones in a Neve 51 Series recording console.

Is something matching this available?

Hello,
Welcome to the DigiKey TechForum. I wasn’t able to find the specifications on the switch you listed but we do have these 11 position rotary switches to look at. You will want to verify the dimensions and voltage/current ratings to see if one will work for you.