{"id":12265,"date":"2024-04-20T03:44:05","date_gmt":"2024-04-20T03:44:05","guid":{"rendered":"https:\/\/www.langir.com\/?post_type=news&p=12265"},"modified":"2025-10-31T15:59:23","modified_gmt":"2025-10-31T15:59:23","slug":"latching-switches","status":"publish","type":"news","link":"https:\/\/www.langir.com\/ja\/news\/latching-switches\/","title":{"rendered":"\u30e9\u30c3\u30c1\u30f3\u30b0\u30b9\u30a4\u30c3\u30c1 - \u4ed5\u7d44\u307f\u3001\u5229\u70b9\u3001\u7528\u9014\u3001\u7a2e\u985e"},"content":{"rendered":"
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Latching Switches – Working, Benefits, Applications, and Types<\/b><\/span><\/h1>\n\n\t\t<\/div>\n\t<\/div>\n\n\t
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\"Latching<\/div>\n\t\t<\/figure>\n\t<\/div>\n<\/div><\/div><\/div><\/div>
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There are various <\/span>types of switches<\/span><\/a> available for controlling electrical circuits. However, if you are looking for something reliable with high load capacity, a latching switch is what you need. These switches, also known as latching relays, offer distinct advantages in specific applications due to their unique operation mechanism.\u00a0<\/span><\/p>\n

Unlike standard relays that require continuous power to maintain their state, latching relays can maintain their on or off state with just a short pulse of power. This distinct feature makes them highly sought after in scenarios where energy efficiency and precise control are needed.\u00a0<\/span><\/p>\n

In this article, we will discuss latching switches in detail, along with their working, types, and applications. So, let’s dig in!<\/span><\/p>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div><\/div>

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What is a Latching Switch?<\/b><\/span><\/h2>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div><\/div>
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A latching switch, or you can say a latching relay, maintains its state (either open or closed) after being actuated by a brief electrical pulse. These switches don’t require continuous compression for operation. Instead, they hold their position until they receive another pulse or signal to change state. Here’s the symbol of a latching switch:<\/span><\/p>\n

You can commonly find these switches in household applications like electronic appliances, remote controls, and lighting systems. They are also used in telecommunication systems due to their energy efficiency capabilities. <\/span><\/p>\n\n\t\t<\/div>\n\t<\/div>\n

Request a Quote<\/a><\/div><\/div><\/div><\/div>
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\"latching<\/p>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div><\/div>

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How Does a Latching Switch Work?<\/b><\/span><\/h2>\n

The working of a latching switch is given as:<\/span><\/p>\n

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  1. Firstly, an electric current passes through the coil of the latching switch, creating a magnetic field around the coil.\u00a0<\/span><\/li>\n
  2. This magnetic field either attracts or repels the movable contacts inside the switch, causing them to switch positions – normally open or closed.\u00a0<\/span><\/li>\n
  3. Once the contacts have attained a specific position, the latching mechanism of the switch comes into play. It keeps the switch in its current position even when the power is discontinued.\u00a0<\/span><\/li>\n
  4. The switch operates continuously until another pulse of electric current is applied to the coil, which generates a new magnetic field. This magnetic moment moves the contacts to a new position (normally open or normally closed), interrupting their operation.\u00a0<\/span><\/li>\n<\/ol>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div><\/div>
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    Types of Latching Switches\u00a0<\/b><\/span><\/h2>\n

    It’s time to discuss the many types of latching switches you’ll find in the market:<\/span><\/p>\n

    Based on Coil\u00a0<\/b><\/span><\/h3>\n

    Depending upon the number of coils, there are two types of latching relays:<\/span><\/p>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div><\/div>

    Single Coil Latching Switch<\/span><\/i><\/a><\/h4><\/div>
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    A single-coil latching switch is the traditional latching switch in which only one coil is present and responsible for toggling between two states (open or closed). When an electric current is applied to the switch coil, it produces a magnetic field that activates the switch, keeping it in the stay position. To change the switch state, a reverse current is applied to the same coil, making the contact move in the opposite direction. <\/span><\/p>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div>

    Double Coil Latching Switch<\/span><\/i><\/a><\/h4><\/div>
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    Double coil latching switches, as the name suggests, have two coils that work independently to set and reset a switch position. One coil is responsible for setting or activating a switch to a specific state. At the same time, the other coil is used to reset or deactivate the switch back to its original position. This dual coil configuration provides more control over the switching process.<\/span><\/p>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>

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    Based on Poles and Throws<\/b><\/span><\/h2>\n

    There are four types of latching switches considering the number of poles and throws:<\/span><\/p>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div><\/div>

    Single Pole Single Throw Latching Switch<\/span><\/i><\/a><\/h4><\/div>
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    A single pole single throw or SPST latching switch has one pole and one throw. This type of switch can only maintain a single on\/off state after being actuated.\u00a0<\/span><\/p>\n

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    Single Pole Double Throw Latching Switch<\/span><\/i><\/a><\/h4><\/div>
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    Next, we have the single-pole double-throw or SPDT latching switches, which have a single pole (input terminal) and two throws (output terminals). Based on the actuation, they can alternate between two different states (e.g., open\/closed, on\/off).<\/span><\/p>\n

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    Double Pole Single Throw Latching Switch<\/span><\/i><\/a><\/h4><\/div>
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    A double pole single throw latching switch has two separate poles (input terminals), each with a single throw (output terminal). This type of switch operates as two independent switches controlled by a single actuator. <\/span><\/p>\n

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    Double Pole Double Throw Latching Switch<\/span><\/i><\/a><\/h4><\/div>
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    Double pole double throw or DPDT latching switches have two poles (input terminals), and each pole has two throws (output terminals). These switches are useful in controlling two independent circuits and alternate between two different states for each circuit. <\/span><\/p>\n

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    \"L12<\/p>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div>

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    Benefits of Latching Switches\u00a0<\/b><\/span><\/h2>\n

    Let’s look at the many benefits of a latching switch:<\/span><\/p>\n\n\t\t<\/div>\n\t<\/div>\n

    Compact Size and PCB Integration<\/span><\/i><\/a><\/h4><\/div>
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    Latching switches are known for their compact size, which is ideal for applications within limited space. This small size also allows their easy integration on printed circuit boards (PCBs), making them suitable for modern electronics and equipment. <\/span><\/p>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div>

    Long Service Life<\/span><\/i><\/a><\/h4><\/div>
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    You may not know this, but latching switches are also popular for their durability and long service life. Once these switches are set in a specific state (either normally open or normally closed), they stay in that position without requiring continuous power. This characteristic reduces wear and tear on internal components of the switch, so they serve you in the long run. <\/span><\/p>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div>

    Low Power Consumption<\/span><\/i><\/a><\/h4><\/div>
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    One of the most useful advantages of latching switches is their low power consumption. These switches only need power during state change and remain in the set position without drawing additional power. This is particularly beneficial for battery-powered devices. <\/span><\/p>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div>

    High Load Capacity<\/span><\/i><\/a><\/h4><\/div>
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    Latching switches have a robust design that easily handles high current and voltage. Hence, they are suitable for industrial and automotive applications where heavy electrical loads are common. <\/span><\/p>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div><\/div><\/div><\/div>

    Send your inquiry<\/a><\/div><\/div><\/div><\/div><\/div>
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    Applications of Latching Switches\u00a0<\/b><\/span><\/h2>\n

    Following are the applications of latching switches:<\/span><\/p>\n