Why do some toggle switches have terminals of different color?

The name of the pictureThe name of the pictureThe name of the pictureClash Royale CLAN TAG#URR8PPP











up vote
3
down vote

favorite












I sometimes see three terminal rocker/toggle switches, and one terminal is a different color than the other two.



Here is an example:
switch

(Image from ebay.com)



What does the colored terminal indicate?










share|improve this question

























    up vote
    3
    down vote

    favorite












    I sometimes see three terminal rocker/toggle switches, and one terminal is a different color than the other two.



    Here is an example:
    switch

    (Image from ebay.com)



    What does the colored terminal indicate?










    share|improve this question























      up vote
      3
      down vote

      favorite









      up vote
      3
      down vote

      favorite











      I sometimes see three terminal rocker/toggle switches, and one terminal is a different color than the other two.



      Here is an example:
      switch

      (Image from ebay.com)



      What does the colored terminal indicate?










      share|improve this question













      I sometimes see three terminal rocker/toggle switches, and one terminal is a different color than the other two.



      Here is an example:
      switch

      (Image from ebay.com)



      What does the colored terminal indicate?







      switches terminal






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked 1 hour ago









      Bort

      2,91111530




      2,91111530




















          1 Answer
          1






          active

          oldest

          votes

















          up vote
          3
          down vote













          I have found a common convention with the off-color terminal being "ground", meaning it is connected to the internal light and is non-common (doesn't connect to both sides).



          My interpretation is that the different colored terminal is used to identify between load and power to the internal light. The "Ground" terminal is indicated because the other two terminals operate as a normal two terminal switch, while Ground is not supposed to carry load current.



          Note that conventions are just that, and the datasheet should always be referenced.




          It's hard to see in the photo, but this switch has the pins numbered on the black plastic.
          Datasheet



          iluminated E-switch datasheet diagram



          E-switch datasheet diagram



          (Images from ckswitches.com)



          The circle with an "X" in it is generic symbol for a "lamp". So there is a lamp and a resistor in the switch. Typically, neon lamps will be used for mains AC, and nowadays LEDs will be used for lower, DC voltage (as seen further below).




          Some switches will are labeled outright like so:



          illuminated toggle switch

          (Image from ebay.com)




          I found this one interesting because the colored pin also has two holes instead of just one.



          Illuminated toggle switch by Lumexlumex illuminated toggle switch diagram

          (Images from Digikey.com)






          share|improve this answer




















            Your Answer




            StackExchange.ifUsing("editor", function ()
            return StackExchange.using("mathjaxEditing", function ()
            StackExchange.MarkdownEditor.creationCallbacks.add(function (editor, postfix)
            StackExchange.mathjaxEditing.prepareWmdForMathJax(editor, postfix, [["\$", "\$"]]);
            );
            );
            , "mathjax-editing");

            StackExchange.ifUsing("editor", function ()
            return StackExchange.using("schematics", function ()
            StackExchange.schematics.init();
            );
            , "cicuitlab");

            StackExchange.ready(function()
            var channelOptions =
            tags: "".split(" "),
            id: "135"
            ;
            initTagRenderer("".split(" "), "".split(" "), channelOptions);

            StackExchange.using("externalEditor", function()
            // Have to fire editor after snippets, if snippets enabled
            if (StackExchange.settings.snippets.snippetsEnabled)
            StackExchange.using("snippets", function()
            createEditor();
            );

            else
            createEditor();

            );

            function createEditor()
            StackExchange.prepareEditor(
            heartbeatType: 'answer',
            convertImagesToLinks: false,
            noModals: false,
            showLowRepImageUploadWarning: true,
            reputationToPostImages: null,
            bindNavPrevention: true,
            postfix: "",
            onDemand: true,
            discardSelector: ".discard-answer"
            ,immediatelyShowMarkdownHelp:true
            );



            );













             

            draft saved


            draft discarded


















            StackExchange.ready(
            function ()
            StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2felectronics.stackexchange.com%2fquestions%2f397946%2fwhy-do-some-toggle-switches-have-terminals-of-different-color%23new-answer', 'question_page');

            );

            Post as a guest






























            1 Answer
            1






            active

            oldest

            votes








            1 Answer
            1






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes








            up vote
            3
            down vote













            I have found a common convention with the off-color terminal being "ground", meaning it is connected to the internal light and is non-common (doesn't connect to both sides).



            My interpretation is that the different colored terminal is used to identify between load and power to the internal light. The "Ground" terminal is indicated because the other two terminals operate as a normal two terminal switch, while Ground is not supposed to carry load current.



            Note that conventions are just that, and the datasheet should always be referenced.




            It's hard to see in the photo, but this switch has the pins numbered on the black plastic.
            Datasheet



            iluminated E-switch datasheet diagram



            E-switch datasheet diagram



            (Images from ckswitches.com)



            The circle with an "X" in it is generic symbol for a "lamp". So there is a lamp and a resistor in the switch. Typically, neon lamps will be used for mains AC, and nowadays LEDs will be used for lower, DC voltage (as seen further below).




            Some switches will are labeled outright like so:



            illuminated toggle switch

            (Image from ebay.com)




            I found this one interesting because the colored pin also has two holes instead of just one.



            Illuminated toggle switch by Lumexlumex illuminated toggle switch diagram

            (Images from Digikey.com)






            share|improve this answer
























              up vote
              3
              down vote













              I have found a common convention with the off-color terminal being "ground", meaning it is connected to the internal light and is non-common (doesn't connect to both sides).



              My interpretation is that the different colored terminal is used to identify between load and power to the internal light. The "Ground" terminal is indicated because the other two terminals operate as a normal two terminal switch, while Ground is not supposed to carry load current.



              Note that conventions are just that, and the datasheet should always be referenced.




              It's hard to see in the photo, but this switch has the pins numbered on the black plastic.
              Datasheet



              iluminated E-switch datasheet diagram



              E-switch datasheet diagram



              (Images from ckswitches.com)



              The circle with an "X" in it is generic symbol for a "lamp". So there is a lamp and a resistor in the switch. Typically, neon lamps will be used for mains AC, and nowadays LEDs will be used for lower, DC voltage (as seen further below).




              Some switches will are labeled outright like so:



              illuminated toggle switch

              (Image from ebay.com)




              I found this one interesting because the colored pin also has two holes instead of just one.



              Illuminated toggle switch by Lumexlumex illuminated toggle switch diagram

              (Images from Digikey.com)






              share|improve this answer






















                up vote
                3
                down vote










                up vote
                3
                down vote









                I have found a common convention with the off-color terminal being "ground", meaning it is connected to the internal light and is non-common (doesn't connect to both sides).



                My interpretation is that the different colored terminal is used to identify between load and power to the internal light. The "Ground" terminal is indicated because the other two terminals operate as a normal two terminal switch, while Ground is not supposed to carry load current.



                Note that conventions are just that, and the datasheet should always be referenced.




                It's hard to see in the photo, but this switch has the pins numbered on the black plastic.
                Datasheet



                iluminated E-switch datasheet diagram



                E-switch datasheet diagram



                (Images from ckswitches.com)



                The circle with an "X" in it is generic symbol for a "lamp". So there is a lamp and a resistor in the switch. Typically, neon lamps will be used for mains AC, and nowadays LEDs will be used for lower, DC voltage (as seen further below).




                Some switches will are labeled outright like so:



                illuminated toggle switch

                (Image from ebay.com)




                I found this one interesting because the colored pin also has two holes instead of just one.



                Illuminated toggle switch by Lumexlumex illuminated toggle switch diagram

                (Images from Digikey.com)






                share|improve this answer












                I have found a common convention with the off-color terminal being "ground", meaning it is connected to the internal light and is non-common (doesn't connect to both sides).



                My interpretation is that the different colored terminal is used to identify between load and power to the internal light. The "Ground" terminal is indicated because the other two terminals operate as a normal two terminal switch, while Ground is not supposed to carry load current.



                Note that conventions are just that, and the datasheet should always be referenced.




                It's hard to see in the photo, but this switch has the pins numbered on the black plastic.
                Datasheet



                iluminated E-switch datasheet diagram



                E-switch datasheet diagram



                (Images from ckswitches.com)



                The circle with an "X" in it is generic symbol for a "lamp". So there is a lamp and a resistor in the switch. Typically, neon lamps will be used for mains AC, and nowadays LEDs will be used for lower, DC voltage (as seen further below).




                Some switches will are labeled outright like so:



                illuminated toggle switch

                (Image from ebay.com)




                I found this one interesting because the colored pin also has two holes instead of just one.



                Illuminated toggle switch by Lumexlumex illuminated toggle switch diagram

                (Images from Digikey.com)







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered 1 hour ago









                Bort

                2,91111530




                2,91111530



























                     

                    draft saved


                    draft discarded















































                     


                    draft saved


                    draft discarded














                    StackExchange.ready(
                    function ()
                    StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2felectronics.stackexchange.com%2fquestions%2f397946%2fwhy-do-some-toggle-switches-have-terminals-of-different-color%23new-answer', 'question_page');

                    );

                    Post as a guest













































































                    Comments

                    Popular posts from this blog

                    Long meetings (6-7 hours a day): Being “babysat” by supervisor

                    Is the Concept of Multiple Fantasy Races Scientifically Flawed? [closed]

                    Confectionery