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Relay
About Relays
A relay is an electrically operated switch. It is used to control a circuit. It comes in a range of functions and form factors. By getting to know different relays in detail, you will pick a suitable type as per your project. So, go through the below guide.
Picking the correct type of relay can be difficult. It refers to a switch that opens or closes a circuit. You will mostly find its use in control panels and automated systems. The preventative models can detect overload, overcurrent, undercurrent, and more conditions. It ensures the protection of any electronic device. Four main parts are present in a common relay: electromagnet, switch point contacts, movable armature, and spring. However, the presence of components may also differ from model to model. Let us explore in detail.
Popular types of relays and their uses
They come in various options based on form factor, function, technology, and more factors. The main types include electromagnetic, solid-state, thermal, hybrid, and reed relay. The electromagnetic type comes with an operating coil and mechanical contacts. But a solid-state one will perform the switching operation with no moving parts. On the other hand, the function of a thermal relay depends upon the effect of heat. It is popular for motor protection. Similarly, different types come with different features. Read on to understand some important ones in detail.
Electrical relays
It is a collective term for various switches. They may come in many sizes, shapes, features, and power ratings depending upon the uses. It uses a low-level control signal to control a high voltage, current or other parameters with different contact arrangements. It can have single or multiple contacts in a package. You can also find them in large power forms used for high current or main voltage applications. The three main actions of an electrical relay are to permit a small current to control high current loads, send various signals and drive more than one output with a single input. Find them in a lot of varieties depending upon the application.
Solid-state relay
It is a popular type of relay. It switches on and off when a little external voltage is applied across its control terminals. This is much similar to an electromagnetic relay, but it does not contain moving parts. They come with a fast switching speed and do not have any physical contacts that may wear out. Many parameters are characterised by requiring activating input voltage, output voltage, current, resistance, and more. You can find them in different types like reed relay coupled SSR, photo-coupled SSR etc. The power gain is high in these types of relays. It is because the control energy is very lower than the output power to be controlled. If you want to buy a solid-state relay online in the UAE, you are in the right place.
Overload relay
An overload relay refers to a device that protects a motor from overheating. In simple terms, it is an electrical device designed to imitate the electric motor’s heating prototypes. Also, its function is to break the flow of current when the relay’s heat-detecting device attains a particular temperature. You can find them in two main types that are thermal and magnetic overload relays. The thermal one cuts the power when the motor uses a lot of current for an extended period. On the other hand, magnetic type finds its use in extreme changes in the ambient temperature.
Tips on how to buy Relays in Dubai
Electrical devices such as relays can be an effortless pick for people belonging to the same field, but for non-frequent buyers, it may be a bit tricky. It is because you have to dive deep into technicalities in order to select an appropriate type. A random model may not serve your purpose or accomplish the job you have in hand. However, if you have certain factors in mind, it can become easy for you to select a useful variety.
- Consider application – They come in a wide array of options based on their application. For example, high voltage varieties switch high voltage and currents, whereas thermal relays are useful in switching on and off devices like electric motors. Hence, consider the application while choosing a type.
- Understand the type of relays – There are many types you can find in the market. For example, electromagnetic, thermal, solid-state, overload protection relay and more. Each has a different design and function. So, it’s important to understand the main types. For example, the overload protection type provides overcurrent protection, whereas the differential type operates when the phasor difference of two or multiple similar electrical quantities surpasses a predetermined value.
- Consider ratings – There are current and voltage ratings on the relays. The current rating can start from a few ratings and may go up to 3000 amp, whereas voltage rating may range from 300 to 600. You can even find the relay with a higher rating depending upon where and how you want to use them.
- Consider advanced options – You can also go for some special types of relays like digital or numeric, time delay, solid-state ones and more for easy operation. Like, digital relays are microprocessor-based and are much more user friendly than regular ones.
Now that you know a lot about this switch, aren’t you excited to bring one for your DIY project? Well, the destination is not far. You have already reached the right place to find the best one. At Shops.ae, we boast a huge collection offered by hundreds of popular online stores. Whether you want to buy a latching relay online in the UAE, overload one or other varieties, find a lot of options here. So, what are you waiting for? Go ahead and have a great browsing experience ahead!
Question & Answer
How are relays connected to the power system?
A power system consists of several devices that require relays for safe operation. Its connection depends upon the type of device and relay you are using. However, the usual way is to let the supply go through the relay first, then the circuit breaker and then the device you want to protect. In an unfavourable condition, the relay will give the command to the circuit breaker, and it will disconnect the device. So, this is how the relay connects to the power system.
Why is relay important?
It is the switch that opens and closes circuits electromechanically or electronically. A relay is an important switch in any electrical and mechanical system as it protects the devices from unfavourable conditions like over-voltage, overcurrent, overload etc. When the relay senses something that is harmful to the system, it gives the command to the circuit breaker that opens the circuit. It protects power systems against trouble and power blackouts.
Where to buy a relay online in the UAE?
Have you been searching for the best relays online in the UAE? If yes, then look no further! You are at the right place already. Here on Shops.ae, you can access a vast collection of options offered by more than 500 online stores in the industry. Whether you are looking for a latching relay, timer relay or other popular types, you can find a lot of varieties right here. Moreover, you can easily compare prices if you think that it can be a pricey affair. You should choose our product search engine if you are looking for a high amount of options to choose from. You can also set your preferences here like budget, brand, sellers and more to find appropriate products.
The above guide will for sure assist you in choosing the best and high-quality relays. Are you wondering where to start? If yes, then you do not have to go anywhere else. On our product search engine, you can find a wide array of options offered by the best brands in the industry, such as Sel, Arduino, Crydom, Godrej, Siemens, and Schneider. Moreover, it is easy to narrow down your choices with filters. Also, you can set your budget, brand preferences and more to find the exact electric products you are looking for. If you are looking for relays for sale online in the UAE, then you are in the right place. So, go ahead and start your browsing journey now.
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