Single pole (SP) switches can be either single throw or double throw, which refers to the number of conducting positions; that is, the number of terminals that will complete the circuit. They are abbreviated as SPST or SPDT accordingly. SP switches consist of two brass terminals, connecting wires, the actuator or toggle switch and an enclosure that is most frequently plastic. Read More…
JN White is an ISO 9001:2015 and ITAR-certified manufacturer of electric switches, membrane switches, graphic overlays, and custom labels. We nimbly handle projects big and small and have the uncommon ability to translate what our customers need into high-quality, high-precision outcomes.
At ALMAX, we specialize in the design and manufacturing of electronic switches that merge precision engineering with customizable interface solutions. Our products are engineered to serve a wide range of industries, from medical device manufacturers to aerospace, industrial controls, and consumer electronics.
At CSI Keyboards, Inc., we have built our reputation around engineering electric switches that combine precision, reliability, and adaptability for a wide range of applications. Our switches are designed to meet the demands of industries where durability and accuracy are critical, from medical devices and industrial equipment to commercial electronics and beyond.
ABB is a manufacturer of low-voltage electrical switches. We offer relaying products, automation products—limit switches, rotary switches, toggle switches, disconnect switches, cam switches and safety switches for construction, process industries, industrial and OEM markets.
At Schneider Electric, we design and manufacture advanced electric switches that bring efficiency, reliability, and innovation to power control and automation systems worldwide. Our switches are engineered to meet the diverse needs of industrial, commercial, and residential environments, offering precise performance, safety, and durability.
At Powell® Electronics, we are dedicated to providing our customers with the best products and services possible. We understand that each customer has unique requirements, and we are committed to meeting those needs with high-quality products and exceptional customer service. Whether you need a standard electronic component or a custom-designed solution, we have the expertise and experience to...
Electric switches for industrial, residential and commercial uses are manufactured by Leviton Manufacturing Company. We offer switches with Amp ratings of 15, 20 and 30; they can include motor starter, lighted handle or pilot light, single-pole, double-pole, three-way and four-way.
More Single Pole Switch Manufacturers
One characteristic of single pole, single throw switches are that they have "On" and "Off" markings on them because those are the only two options. SPDT switches are slightly different because they are changeover switches that toggle between two circuit options. The maximum voltage and current of switches is a necessary specification to keep in mind in addition to knowing the difference between AC and DC currents and what the situation requires.
Single pole switches are very common and are used in virtually every building that uses electricity: light switches are SP. The large category of power switches or buttons are SPST, but other simple function devices use these switches as well, such as doorbells.
Single pole switches have few parts because of the basic function they provide. As the switch is flipped (or pushed in the case of push button SPST switches), a strip of conducting material is brought into contact with both terminals, closing the circuit and allowing electricity to flow through the actuator. The operator is protected from the current because the components are safely contained inside the enclosure. When the switch is toggled back, the conductor breaks contact with both terminals and the circuit is open.
Single pole, double throw switches are similar in operation. One actuator is flipped from one circuit line to another. There are two terminals that the switch toggles between, removing the "Off" setting. SP double throw switches are used to change circuits from a higher voltage current to lower current, for example, if the lights need to remain on but at a lower intensity. SPST and SPDT can be used in combination to create more options. When two SPST switches are used in combination, they essentially form a double pole, single throw switch, single throw switch.
Though other switches can do the same thing in one enclosure, single pole switches are very common, comparatively inexpensive and easy to install. Some switches may be illuminated through use of a small bulb inside the plastic shell that covers the actuator. Timers, faceplates and additional enclosures are also available.
