There are at least four terminals in a double pole (DP) switch, and these common devices allow two circuits to be either on or off while controlled by a single toggle, pushbutton or other actuator. Read More…
Leading Manufacturers
Electro-Mech Components, Inc.
South El Monte, CA | 626-442-7180Electro-Mech Components designs and manufactures illuminated pushbutton switches and miniature switches plus multiswitch interlocking assemblies and indicator lights. We have an extensive selection of off-the-shelf pushbutton switches plus industrial-grade switches and are always happy to customize.
ElectroSwitch Corporation
Weymouth, MA | 781-335-5200When you select an electric switch or relay from Electroswitch, you’re gaining the benefit of over 50 years of experience. The primary supplier of rugged, high-quality rotary switches, toggle switches, panels and other electrical products, Electroswitch has the knowledge to meet the intricacies of any application with quality, reliability and performance. With Electroswitch, there’s Never A Doubt.
OTTO Engineering, Inc.
Carpentersville, IL | 847-428-7171OTTO Engineering designs and manufactures switches and control grips for the most demanding applications. From material handling to medical, from commercial to military applications, we provide sealed snap-action, pushbutton, toggle, rocker, rotary and lighted switches.
ITW Switches
Des Plaines, IL | 800-544-3354Have a switch-related problem? Let ITW Switches provide you with the solution via our extensive line of slide switches, sealed switches, pushbutton switches, rocker switches, vandal-resistant and snap-action switches. If a standard switch won't work, we'll custom make one. In business since 1954.
ALUDEC USA
Eden Prairie, MN | 800-806-6113The electric switches that we offer here at ALUDEC USA cannot be topped by the competition. We breathe and live precision and that means our products are at the top of the line at all times. It is our goal that each and every customer has their expectations exceeded so that we keep you coming back to us for all of your electric switch needs. Contact us via telephone or email or visit our website today to learn more about how we may be able to assist you!
Electroswitch Electronic Products
Raleigh, NC | 919-833-9707Electroswitch Electronic Products is a superior designer and manufacturer of a range of electric switches, such as rotary switches (open frame, enclosed frame, specialty, military) and miniature switches (pushbutton, toggle, rocker and paddle). We also offer OakGrigsby optical and mechanical encoders.
Double Pole Switch - United Electric Controls Co.DP switches may be either single throw (ST) or double throw (DT) depending on how many conducting positions the actuator can be in. Double pole, single throw switches consist of four brass terminals, connecting wires and two actuators inside one enclosure. A double pole, double throw has six brass terminals because it is practically two single pole, double throw switches paired together. DPST switches may be labeled with "On" and "Off" markings to identify which switch position closes the circuit.
DPDT switches are not as simple to label because no matter which position the switch is in, it still closes a circuit. Instead of being "On" or "Off," these switches are often labeled with the voltage or current of the corresponding circuit. DPST switches are often used to switch electricity mains because they can isolate both the live and neutral connections to avoid a safety issue. Double pole switches are also used to switch appliances using 240 volt circuits to a circuit of a different currency. They are commonly used in devices, equipment and appliances with multiple mechanical parts that function simultaneously.
Double pole switches are simple devices. When the switch is flipped or pushed, the actuator is brought into contact with a terminal. Because it is made from conductive material, the actuator acts as a bridge between the terminal and the rest of the circuit. The electrical switch is safely enclosed, protecting both the circuit and the user. The actuator may be a toggle switch that is flipped or, in the case of normal-off or momentary-on switches, a push button that is depressed.
Rocker buttons are widely used as well; they are curved buttons that click into place like a toggle. Though DPDT switches eliminate the "Off" setting, there are variations that include it as a third actuator position. This is useful for motor control because the motor's circuit can be configured to run forward, reverse and off.
DPST and DPDT switches can be used in combination with SPST and SPDT switches for many circuitry configurations. By bundling several switches in the same panel or assembly, activating one mechanism could activate many. Double pole switches are common, relatively inexpensive and easy to install. Faceplates, timers, light bulbs and waterproof enclosures are available as add-on features to enhance the look and use of these switches.
