How to Choose between Pushbutton Switch Types

Choosing the right pushbutton switch for a particular application can be a daunting task, especially with the wide variety of types available on the market. While most share the same general role of allowing for actuation, there are many designs that vary in their specific functions and uses. In this blog, we will provide a basic overview of the most popular forms of pushbutton switches, ensuring that you have the knowledge you need to make an informed purchasing decision.

When it comes time to begin researching options for pushbutton switches, the very first consideration one should make is the type of operation it needs to offer. Pushbutton switches generally fall into two categories, either being momentary and latching. Momentary pushbutton switches are designed to remain in their "on" state only while being pressed, immediately reverting to an “off” state when pressure is released. These switches are ideal for applications where a temporary activation is required, such as in doorbells or computer keyboards.

Latching pushbutton switches, on the other hand, maintain their state until they are pressed again. This means that once you press the switch, it will stay "on" or “off” depending on the state it was previously in. Latching switches are commonly used in applications where persistent activation is needed without continuous pressure being necessary, such as in light switches or power buttons on electronic devices.

Aside from the operating mechanism, another important factor to consider is the switch’s electrical rating. Pushbutton switches of the same type can be designed to handle various levels of voltage and current, so it is essential to select a switch that can safely handle the electrical load of your application to prevent damage or failure. Checking the switch’s voltage and current ratings against the requirements of an application’s circuit will ensure reliable operation.

The environmental conditions in which the switch will be used also play a significant role in the selection process. For industrial environments, the chosen option must often be able to withstand harsh conditions typical of operation, including exposure to dust, moisture, and temperature extremes. In such cases, choosing a switch with an appropriate IP rating is essential, a measure that indicates the level of protection the switch offers against solid objects and liquids. As an example for reference, a switch with an IP67 rating is dust-tight and can withstand immersion in water up to one meter deep.

The physical design and aesthetics of the pushbutton switch can also influence the final choice, as there are options for various sizes, shapes, and colors. The chosen design should be ergonomic and suitable for the intended application, an example being a brightly colored switch for an emergency stop button to ensure that it is easily visible and accessible. Meanwhile, smaller, more discreet switches might be better for a consumer electronic device where aesthetics and space are important objectives.

Illumination is another feature available in many designs, these switches containing built-in lights that indicate the switch’s status or provide visibility in low-light conditions. This is particularly useful in control panels and other applications where visual feedback is essential for operation, such as having increased assurance that a machine is in its “off” state for safety.

Additionally, the material and construction of the pushbutton switch should be taken into account. Switches can be made from plastic, metal, and rubber, each having a specific balance of durability, resistance to wear, and suitability for different environments. For example, a metal switch might offer a high level of durability and impact resistance that benefits more demanding needs, while a plastic switch might be preferred in a low-stakes setting for being more cost effective.

Lastly, it is important to consider the mounting and installation requirements of the pushbutton switch. Different options are designed for different mounting styles, such as panel mount, surface mount, or through-hole mount types. Ensuring that the switch’s mounting style is compatible with the design of a system or assembly will facilitate easy installation and secure attachment.

For those seeking reliable pushbutton switches and other industrial parts, Electromechanicals and Hardware Hub offers a comprehensive selection to meet your needs. Across the website, one will find a plethora of new, used, obsolete, and hard-to-find options that are available for purchase today with the benefit of fair pricing, timely fulfillment, and quality assurance. Taking the first step of procurement is as simple as submitting a Request for Quote (RFQ) form through our website, or you may call or email directly to get in touch with a representative. We are available around the clock for customer needs, and we look forward to speaking with you.