{"id":2439,"date":"2023-06-08T05:34:23","date_gmt":"2023-06-08T05:34:23","guid":{"rendered":"https:\/\/35.94.173.37\/blog\/?p=2439"},"modified":"2026-06-26T18:42:58","modified_gmt":"2026-06-26T18:42:58","slug":"hand-switches-and-electrical-circuits","status":"publish","type":"post","link":"https:\/\/www.apexwaves.com\/blog\/hand-switches-and-electrical-circuits\/","title":{"rendered":"Hand Switches and Electrical Circuits"},"content":{"rendered":"\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<figure class=\"wp-block-audio\"><audio controls src=\"https:\/\/www.apexwaves.com\/blog\/wp-content\/uploads\/2023\/06\/Hand-Switches-and-Electrical-Circuits.mp3\"><\/audio><figcaption class=\"wp-element-caption\"><strong><em>Listen to this post here.<\/em><\/strong><\/figcaption><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"has-text-align-left has-text-align-left\">Switches are the first basic building block of a successful electronic device. Since they have the power to either complete or disrupt an electrical circuit, control is impossible to achieve without them. Switches are fundamentally binary devices (they can only be either entirely on or completely off), but how do they work? While there are many different types of switches to discuss, this post will take a look at some of the most common types of manual hand switches and how they function.<\/p>\n\n\n\n<!--more-->\n\n\n\n<h2 class=\"wp-block-heading has-text-align-left has-black-color has-text-color has-link-color wp-elements-7f8b6a682ef8cb417e440abc002ea241\" style=\"font-size:25px\"><strong>Common Hand Switch Types<\/strong><\/h2>\n\n\n\n<p class=\"has-text-align-left has-text-align-left\">Manual switches designed to be operated by humans are known as&nbsp;<strong>hand switches<\/strong>. These include:<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img decoding=\"async\" src=\"https:\/\/www.apexwaves.com\/blog\/wp-content\/uploads\/2023\/06\/1-1024x1024.png\" alt=\"Picture of a light switch with a diagram of a toggle switch to the right\" class=\"wp-image-2119\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading has-text-align-left has-black-color has-text-color has-link-color wp-elements-2d96fb1eed7945ba37b78b3c2ebdc31e\" style=\"font-size:25px\"><strong>Toggle Switches<\/strong><\/h2>\n\n\n\n<p class=\"has-text-align-left has-text-align-left\">Toggle switches are operated by a lever that is tilted in one of two or more places: a common example being a household light switch. By moving the lever, an electrical circuit is either opened or closed, and the position of the lever provides a visual cue as to the condition of the circuit. The lever of most toggle switches will stay are rest in any position, but others contain internal spring mechanisms that restore the lever to a predetermined usual position, enabling what is known as \u201cmomentary\u201d functioning.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img decoding=\"async\" src=\"https:\/\/www.apexwaves.com\/blog\/wp-content\/uploads\/2023\/06\/2-1024x1024.png\" alt=\"Picture of a power button with a diagram of a pushbutton switch to the right\" class=\"wp-image-2120\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading has-text-align-left has-black-color has-text-color has-link-color wp-elements-2cdddd01d30ce624704051b07e62f737\" style=\"font-size:25px\"><strong>Pushbutton Switches<\/strong><\/h2>\n\n\n\n<p class=\"has-text-align-left has-text-align-left\">Pushbutton switches are the type of switch most frequently utilized by industrial control panels. They are two-position devices, operated by pressing and releasing a button that most often contains an internal spring mechanism that returns the button to its \u201cunpressed,\u201d state. (Some pushbutton switches are designed to stay in the \u201cpressed\u201d state until pushed again). With each button press, certain pushbutton switches will latch alternately off and on.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img decoding=\"async\" src=\"https:\/\/www.apexwaves.com\/blog\/wp-content\/uploads\/2023\/06\/3-1024x1024.png\" alt=\"Picture of a soundboard knob with a diagram of a selector switch to the right\" class=\"wp-image-2121\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading has-text-align-left has-black-color has-text-color has-link-color wp-elements-afaa88e553f89646a4a2c972871fb939\" style=\"font-size:25px\"><strong>Selector Switches<\/strong><\/h2>\n\n\n\n<p class=\"has-text-align-left has-text-align-left\">Selector switches use some form of rotary knob to move between two or more locations. Similarly to toggle switches, selector switches can either be left in one position or can include spring-loaded return mechanisms.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img decoding=\"async\" src=\"https:\/\/www.apexwaves.com\/blog\/wp-content\/uploads\/2023\/06\/4-1024x1024.png\" alt=\"Picture of a drone controller with a diagram of a joystick switch to the right\" class=\"wp-image-2122\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading has-text-align-left has-black-color has-text-color has-link-color wp-elements-c615a1a78032d89010e83a9f91b2141f\" style=\"font-size:25px\"><strong>Joystick Switches<\/strong><\/h2>\n\n\n\n<p class=\"has-text-align-left has-text-align-left\">A joystick switch is made of a lever with many motion axes that can be freely moved. Movement depends on the way in which the lever is pushed, which causes one or more switch contact mechanisms to be triggered.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-text-align-left has-black-color has-text-color has-link-color wp-elements-60ccbe758ca5bc39d41f2a772148811d\" style=\"font-size:25px\"><strong>\u201cPoles\u201d and \u201cThrows\u201d<\/strong><\/h3>\n\n\n\n<p class=\"has-text-align-left has-text-align-left\">The function of a switch is determined by the amount of&nbsp;<strong>poles&nbsp;<\/strong>and&nbsp;<strong>throws&nbsp;<\/strong>it has. In this context, \u201cpoles\u201d refers to the Individual circuits that the switch comes in contact with and controls, whiles \u201cthrows\u201d refers to the specific switch settings. For example, a switch with the settings of \u201chigh\u201d and \u201clow\u201d&nbsp; is referred to as a \u201cdouble-throw\u201d switch. Switch types are sometimes shortened, so a \u201csingle-pole, double-throw\u201d switch is also known as an \u201c<strong>SPDT<\/strong>\u201d switch.&nbsp; These names are important as they immediately indicate the number of poles and throws, providing a clear description of the switch\u2019s purpose.<\/p>\n\n\n\n<p class=\"has-text-align-left has-text-align-left\">In general, the type of switch ideal for the job will be determined by the particular application. The form factor of the switch must be chosen carefully because of the various goals, functions, and physical considerations.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-text-align-left has-black-color has-text-color has-link-color wp-elements-13b5e1dac6564988272a53f7a3c668e1\" style=\"font-size:25px\"><strong>Designs of Switch Contacts<\/strong><\/h3>\n\n\n\n<p class=\"has-text-align-left has-text-align-left\">Any device that allows two conductors to come into regulated contact with one another can be used to create a switch. Good switch design, however, must be robust and trustworthy and prevent the danger of electric shock for the user.<\/p>\n\n\n\n<p class=\"has-text-align-left has-text-align-left\">Contacts are the conductive components that form or sever the electrical connections in switches. The conductivity characteristics of silver or silver-cadmium alloy contacts are often not considerably impacted by surface corrosion or oxidation. Regardless of the metal used, a mechanism ensures even contact between the switch contacts for&nbsp;<strong>optimal<\/strong>&nbsp;<strong>dependability&nbsp;<\/strong>and&nbsp;<strong>little resistance<\/strong>.<\/p>\n\n\n\n<p class=\"has-text-align-left has-text-align-left\">One drawback of standard switch contacts in industrial applications is exposure to the environment. While this would not be an issue in a clean control room, most industrial settings risk contaminants in the air such as chemical corrosives which can hasten the deterioration and failure of contacts.<\/p>\n\n\n\n<p class=\"has-text-align-left has-text-align-left\">Another important consideration when designing switches is the recognized standards for the environmental conditions that a switch\u2019s housing can resist set by the NEMA (<a href=\"https:\/\/www.nema.org\/\">National Electrical Manufacturers Association<\/a>) enclosure rating and the Ingress Protection (IP) rating.<\/p>\n\n\n\n<p class=\"has-text-align-left has-black-color has-text-color has-link-color wp-elements-0a2a08c30b40e3ac6a5cb4d3520d2d23\" style=\"font-size:25px\"><strong>ADDITIONAL INFORMATION:<\/strong><\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button is-style-outline is-style-outline--1\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/www.allaboutcircuits.com\/textbook\/digital\/chpt-4\/switch-types\/\">All About Circuits<\/a><\/div>\n\n\n\n<div class=\"wp-block-button is-style-outline is-style-outline--2\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/www.electronicshub.org\/switches\/#Electronic_Switches\">ElectronicsHub<\/a><\/div>\n\n\n\n<div class=\"wp-block-button is-style-outline is-style-outline--3\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/www.nema.org\/\">NEMA<\/a><\/div>\n\n\n\n<div class=\"wp-block-button is-style-outline is-style-outline--4\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/cdn.thomasnet.com\/kc\/58\/doc\/electrical-switches-buying-guide.pdf\">Electrical Switch Buying Guide<\/a><\/div>\n<\/div>\n\n\n\n<div style=\"height:25px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Switches are the first basic building block of a successful electronic device. Since they have the power to either complete or disrupt an electrical circuit, control is impossible to achieve without them. Switches are fundamentally binary devices (they can only be either entirely on or completely off), but how do they work? While there are [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2440,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[3],"tags":[75,99,123,124,232,288,345,553,889,932],"class_list":["post-2439","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-circuits","tag-automation","tag-buttons","tag-circuitry","tag-circuits","tag-engineering","tag-industrial","tag-manufacturing","tag-power","tag-switches","tag-toggles"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.apexwaves.com\/blog\/wp-json\/wp\/v2\/posts\/2439","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.apexwaves.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.apexwaves.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.apexwaves.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.apexwaves.com\/blog\/wp-json\/wp\/v2\/comments?post=2439"}],"version-history":[{"count":2,"href":"https:\/\/www.apexwaves.com\/blog\/wp-json\/wp\/v2\/posts\/2439\/revisions"}],"predecessor-version":[{"id":3839,"href":"https:\/\/www.apexwaves.com\/blog\/wp-json\/wp\/v2\/posts\/2439\/revisions\/3839"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.apexwaves.com\/blog\/wp-json\/wp\/v2\/media\/2440"}],"wp:attachment":[{"href":"https:\/\/www.apexwaves.com\/blog\/wp-json\/wp\/v2\/media?parent=2439"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.apexwaves.com\/blog\/wp-json\/wp\/v2\/categories?post=2439"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.apexwaves.com\/blog\/wp-json\/wp\/v2\/tags?post=2439"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}