What Are Toggle Switches?
A toggle switch is a mechanical switch that’s commonly used to control the flow of electricity in electronic devices. It’s characterized by the presence of a manually operated handle or lever which controls the flow of electrical current from the power supply to a device (such as a household appliance). It consists of a lever or handle that can be moved back and forth between two positions, hence the name “toggle.” The switch has three main components: the lever, the contacts and the housing.
How Does a Toggle Switch Work?
Here’s a basic explanation of how a toggle switch works.
#1. Lever/Handle: The lever is the part of the switch that you physically move to change its position. It can be a simple flat lever or a rounded one, depending on the design of the switch.
#2. Contacts: Inside the switch housing, there are metal contacts that connect or disconnect when the lever is moved. These contacts are usually made of materials that conduct electricity well, such as copper or silver. When the switch is in one position, the contacts are closed, allowing electricity to flow through. When the switch is in the other position, the contacts are open, interrupting the flow of electricity.
#3. Housing: The housing contains and protects the internal components of the switch. It provides a structure for the lever and keeps the contacts in place.
When you flip the lever of a toggle switch, it physically moves the contacts from one position to another, either opening or closing the circuit. In the closed position, the switch allows current to flow through, and in the open position, it interrupts the flow of current.
What Are Toggle Switches Used For?
Toggle switches are commonly used in a variety of electronic devices and applications, such as lighting controls, electronic appliances and electronic circuits, where a simple on/off control is needed. They are reliable and durable, making them suitable for various uses.
Smaller size toggles are often used in equipment and devices for telecommunications, networking, instrumentation and medical devices. High power toggles are used in industrial control panels, motor sports vehicles, commercial appliances, restaurant equipment and recreational vehicles.
Pros & Cons
Pros
Simple Operation: They’re easy to understand and operate. Users can quickly flip the lever to turn a device on or off.
Durability: They’re are often durable and can withstand a significant number of switching cycles. This makes them suitable for applications where frequent switching is required.
Cost-Effective: They’re typically cost-effective to manufacture, making them a budget-friendly option for various applications.
Versatility: They come in various sizes and configurations, allowing for versatility in design and application. They are available in single-pole/single-throw (SPST), single-pole/double-throw (SPDT) and double-pole/double-throw (DPDT) configurations, among others.
Mechanical Feedback: The physical movement of the toggle lever provides users with a tactile feel, giving them feedback about the switch’s state.
Cons
Limited Functions: They’re generally limited to simple on/off functions. More complex operations or features may require different types of switches.
Exposed Contacts: In some environments, the exposed contacts of a toggle switch may be susceptible to dust, moisture or other contaminants, potentially affecting their performance.
Noise: Depending on the design and application, the physical movement of the toggle lever can create audible clicks or noise, which may be undesirable in certain settings.
E-Switch Products
E-Switch offers toggle switches with multiple options, such as actuators, bushings, terminals. There are options for low to high current ratings, as well as some toggle switches with horsepower ratings for industrial applications.