What is a dual control switch?
The so-called double control switch is composed of two independent single-pole double-throw switches. Almost every brand and series of switches on the market now have unipolar and bipolar switches, and that's the bipolar switch we use here. As can be seen from the above figure, no matter which switch you toggle (K 1 or K2), the state of the whole circuit will be switched (on and off), so that any switch can turn on or off the controlled lamp at any time, which is dual control. Similarly, the three-control switch means that one of the three switches in different positions can control a lamp at will, and its circuit is a little more complicated, using a double-pole double-throw switch:
Double control, that is, more than two control switches, that is to say, one lamp can be controlled in different places. We often use: stairwells, basements, long corridors, large bedrooms, etc.
Now many master bedrooms have bathrooms, so there will be a small aisle with lights on at the door and lights off at the bedside, which is convenient for double control.
Double-control switch is a very common switch panel, which is bought in hardware stores. The most important thing is to lay the wires first. It is a little different from ordinary lamps, and it is like this when wiring. In the construction specification, it is stipulated that lamps should be controlled by L-phase line, which is what we often say. On the control switch panel, a return line was added. Double control switch, plus two circuits, can be controlled by three control points.
In addition to controlling the switch of electrical appliances in different places, the dual-control switch can also be connected with power supply at both ends and lamps at one end, thus controlling the emergency lighting circuit that needs forced ignition. Although the double-control switch brings a lot of convenience to life, it needs to extend the wiring path in design and greatly increase the cost in reforming the circuit, so don't abuse it unless you have to.
In addition to the three-control switch, the double-control switch is also derived, that is, the switch that can control the same electrical appliance in three different positions. However, the circuit connection of three-control switch is complicated, which requires double-pole double-throw switch, and its practical use value is not high, so it is rare.
Brand introduction of dual-control switch
Siemens Siemens AG, founded in 1847, is a leading brand in the field of electronic and electrical engineering in the world. Siemens is a pioneer in the electrical and electronic industry in the world. Active in the four business fields of energy, medical care, industry, infrastructure and city, we create benefits for customers all over the world 190 countries with innovative technology and professional knowledge. )
2.Legrand Legrand (Legrand (Shanghai) Management Co., Ltd., 1860 was born in France, and is a pioneer in the world electrical industry, the world's leading supplier of electrical and intelligent building system solutions, and a professional manufacturer specializing in building electrical and electrical products and systems).
3. Schneider Schneider (Schneider Electric (China) Co., Ltd., Schneider Schneider, top ten brands of electrical equipment and electricians, 1920 started in France, 170 years of glorious history, leading brand in the field of power distribution equipment in the world, and famous manufacturer in the field of electricity).
4. Simon (simon electric (China) Co., Ltd., one of the top ten brands of electricians and switch sockets, 19 16 was founded in Spain. It is a well-known brand of low-voltage electrical appliances in the world, a high-tech enterprise in Jiangsu Province, and one of the largest manufacturers of professional switches and lamps in the world. Obtained nearly 100 domestic product patents, ranking among the best in domestic counterparts. )
5. Zhengtai (Zhejiang Zhengtai Construction Electric Appliance Co., Ltd.) is one of the four pillar industries of Zhengtai Group, which is tied with high and low voltage electrical appliances, power transmission and transformation, and instrumentation. Since its establishment, Chint has been adhering to the business philosophy of building the first brand of China Electrician based on quality. The glorious course of 17 years is the struggle history of national electricians to continuously improve quality and innovate technology. )
6.Home Gamder (Zhongshan Household Appliances Co., Ltd. is an enterprise specializing in the research, development and production of electrical products. It covers an area of about 20,000 square meters and has a garden-like production environment. The company has advanced equipment such as high-precision CNC EDM machine tool, automatic CNC injection molding machine and fully automatic high-speed punch. At the same time, the world's advanced design software is adopted to realize the vertical manufacturing system of product design, mold manufacturing, injection molding, metal stamping and installation inspection, and passed the ISO900 1 international quality certification system. )
The above small series introduces what a dual-control switch is, and also introduces some better brands of dual-control switches on the market at present. I hope you can have a better understanding of the dual-control switch through Bian Xiao's introduction today.