A relay is normally used in appliances below 5kw while a contactor is preferred when the appliance is heavier. A relay is used only in control circuit while a.
What Is A Contactor Library Automationdirect Com
Difference between relay and switch. The basic principle of operation of the contactor and the relay are the same. Smart wifi curtain shutter switch touch panel timer app for amazon google home. The difference between an ac and dc relay coil. Because a relay is able to control an output circuit of higher power than the input circuit it can be considered to be in a broad sense a form of an. Both of them are electrically operated switches used for control and switching of loads. The key difference between control relays and contactors is the rating of current that they are designed to handle.
This article can give you a clear picture of the difference between relays and contactors. In order to appropriately energize the relay alternating current and direct current need to pass through the coil to answer the electromagnet which magnetizes the core and attracts the lever. 2 gang wifi smart touch switch home wall light timer app for alexa google ifttt. Contactors are used for loads that have comparatively higher currents and higher system voltages. Well relay is a electromechanical switch. Contactors tend to be more stout and can handle higher.
Sonoff switch relay module timer smart wifi wireless remote for iphone android. How to control a lamp bulb using a switch. The small current which is applied to the coil will switch the current in the circuit board. Relays are essentially electromagnets which also contain a spring loaded lever which can switch over electrical contacts. Relays you may come across could have coil voltages of anywhere between 12v and 240v on average and can control loads in the 5 15amp range. A relay is an electrically operated switch.
Difference between relay and switch electrical symbols. Here are some of the circuit symbols for relays and switches that are commonly used in electronic. 123 gang wifi smart touch switch light app timer for amazon alexa google ifttt. Difference between contactor and relay since a contactor is required for a higher load a relay is always cheaper than a contactor. This example shows a lamp control using an spst single. The difference between them is in term of their application and where they are used.
Relays are used where it is necessary to control a circuit by a separate low power signal or where several circuits. Many relays use an electromagnet to mechanically operate a switch but other operating principles are also used such as solid state relays. The main difference between relay and switch is that the relay is a electrically operated switch and switch is a electrical component that can break an electrical circuit.
Gallery of Difference Between Relay And Switch
