An electromagnet is a device that produces a magnetic field, which is possible due to the flow of electric current through it. Electromagnets are used in systems that can both attract and repel, and even move and lift elements made of ferromagnetic metals. Such metals include mainly iron, although sometimes objects of this type are made of nickel or cobalt. Due to the way they influence metal objects we can distinguish between pushing and holding electromagnets. Individual models differ in power and operating voltage. Considering these parameters we should choose electromagnets for a specific project and object. In Botland shop you will find a wide range of electromagnets, which have found their application in mechanical systems and access control systems. They have different sizes and shapes, as well as range of operation. Check our offer and compare individual electromagnets in order to choose the best one.
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Electromagnets
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Electromagnet holding 12V 6W 55kgf
Holding electromagnet with a rated power of 6 W. Powered by 12 V. Current consumption is approximately 500 mA. The device maintains a mass of 55 kg under standard...
Index: DNG-17578
Index: DNG-17578
The device allows to perform a linear - pulling motion with a voltage signal of 12 V. The range of the bolt is approximately 10 mm.
Index: MOD-08071
Index: MOD-08071
Electromagnet holding 12V 3W 15kgf
Powered by 12 V , a holding electromagnet that holds a mass of 15 kg under standard acceleration due to gravity (9.8 m/s 2 ). Current consumption during operation is...
Index: DNG-17570
Index: DNG-17570
The holding electromagnet is powered by 24 V with a power of 2.5 W. It holds a mass of 3 kg at a standard acceleration due to gravity of 9.8 m/s 2 . The body diameter is 20...
Index: MOD-07027
Index: MOD-07027
Electromagnet holding 12V 2W 8kgf
The holding electromagnet is powered by 12 V. The rated power is 2 W. The maximum load capacity of the magnet is 8 kg with a standard gravitational acceleration of 9.8 m/s...
Index: DNG-17569
Index: DNG-17569
Pulling electromagnet 12V 0,5kg
A device whose task is to perform linear motion - pulling, after giving a 12 V voltage signal. The electromagnet draws about 0.6 A current. The range of the pin is 5 mm....
Index: DNG-17757
Index: DNG-17757
Pulling electromagnet 12V 7,2W 0,8kg
An electromagnet which, under the influence of supplying a voltage of 12 V to the coil, performs a linear - pulling motion . The device draws about 0.6 A current. The range...
Index: DNG-17760
Index: DNG-17760
Electromagnet holding 12V 3W 20kgf
Holding electromagnet, powered by 12 V. With a standard acceleration due to gravity of 9.8 m/s 2 it supports a mass of 20 kg . The current consumption during operation of...
Index: DNG-17572
Index: DNG-17572
Pulling electromagnet 12V 4,5kg
An electromagnet which, under the influence of providing a 12-volt signal pulse, performs a continuous rectilinear movement. The device draws a current of approx. 2 A...
Index: DNG-17765
Index: DNG-17765
Electromagnet pulling 12V 0.4kg
The device allows to perform a linear - pulling motion with a voltage signal of 12 V. The range of the bolt is approximately 10 mm.
Index: DNG-12093
Index: DNG-12093
Holding electromagnet 12V 60kgf
The holding electromagnet is powered with a voltage of 12 V. Keep the weight of 60 kg in standard earth acceleration 9.8 m/S2. The dimensions of the elctromagnet 38 x 80 x...
Index: MOD-09813
Index: MOD-09813
Holding electromagnet is powered with voltage of 12 V with power of 4.2 W. It keeps the weight of 180 kg by standard earth acceleration of 9.8 m/s2. The dimensions of the...
Index: MOD-08835
Index: MOD-08835
Electromagnet holding 12V 3,5W 30kgf
Holding electromagnet with a rated power of 3.5 W. Powered by 12 V. Current consumption is approximately 300 mA. The device maintains a mass of 30 kg under standard...
Index: DNG-17574
Index: DNG-17574
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Electromagnet pulling 12V 7,8W 0,8kg
The electromagnet is equipped with a 10 mm long bolt, which after receiving a 12 V voltage signal performs a linear pulling movement. The device consumes approx. 0.65 A...
Index: DNG-17759
Index: DNG-17759
Electromagnet holding 12V 4W 30kgf
Powered by 12 V , the holding electromagnet holds a mass of 30 kg at a standard acceleration due to gravity of 9.8 m/s 2 . The rated power of the device is 4 W and the...
Index: DNG-17576
Index: DNG-17576
Electromagnet holding 12V 3,5W 25kgf
Holding electromagnet, powered by 12 V. With a standard acceleration due to gravity of 9.8 m/s 2 it supports a mass of 25 kg . The device's current consumption is 300 mA,...
Index: DNG-17573
Index: DNG-17573
Pulling electromagnet 12V 0,8kg
A small pulling solenoid with a pin range of 10 mm. The device, after receiving a 12 V voltage signal, performs a straight pulling motion . The electromagnet draws about 1 A...
Index: DNG-17761
Index: DNG-17761
Electromagnet holding 12V 6W 60kgf
Holding electromagnet with a rated power of 6 W. It requires a voltage pulse of 12 V to operate. With a standard acceleration due to gravity of 9.8 m/s 2, the maximum...
Index: DNG-17579
Index: DNG-17579
Electromagnet pushing 12V 2kg 25mm
The pushing electromagnet is powered by 12 V , it can push out a mass of 2 kg with a standard earth acceleration of 9.8 m/s2. The housing diameter is 25 mm and the bolt...
Index: AKS-19283
Index: AKS-19283
Electromagnet holding 12V 4W 45kgf
Holding electromagnet, powered by 12 V. With a standard acceleration due to gravity of 9.8 m/s 2 it maintains a mass of 45 kg . The current consumption of the device is...
Index: DNG-17577
Index: DNG-17577
Electromagnet holding 12V 10W 80kgf
A holding electromagnet which, after applying a voltage pulse of 12 V , holds a mass of 80 kg (with a standard acceleration due to gravity of 9.8 m/s 2 ). The current...
Index: DNG-17581
Index: DNG-17581
Solenoid, coil, 5V electromagnet - SparkFun ROB-11015
The device allows to perform a linear movement, for example, pulling or pushing, using the voltage signal of 5 V. The range of the bolt is approximately 4.5 mm.
Index: SPF-01996
Index: SPF-01996
Pulling electromagnet 12V 0,6kg
Electromagnet, which after giving a voltage signal of 12 V , allows for linear motion - pulling. The range of the device's pin is 10 mm and its maximum load capacity is 0.6...
Index: DNG-17758
Index: DNG-17758
Electromagnet holding 12V 10W 70kgf
Powered by 12 V , the holding electromagnet holds a mass of 70 kg under standard acceleration due to gravity (9.8 m/s 2 ). Current consumption during operation is...
Index: DNG-17580
Index: DNG-17580
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What is an electromagnet and how does it work?
Electromagnets produce a magnetic field. They are usually in the form of a coil, which is deposited on a core made of material with very high magnetic properties. As a result of the flow of electric current through the coil, a magnetic current is produced. It is this current that is responsible for magnetizing the core and amplifying it. The core is demagnetized when the current stops flowing. Then the electromagnet ceases to be the source of the magnetic field.
The electromagnet has the shape of a coil, in the middle there is a core made of ferromagnetics. It is usually made of steel, which is very good for magnetization. In the case of AC electromagnets, the core is made of metal sheets, which are isolated from each other by a special insulating material in order to reduce energy losses. In order to disperse the magnetic flux, electromagnets are often given a horseshoe shape.
The magnetic field produced by an electromagnet covers a similar area to that which is characteristic of a typical bar magnet. The field can be reinforced by winding a wire around an iron core. It must be 'soft', which means that it does not have the capacity to store a magnetic field. It is magnetized only after electric current has passed through it.
Use of electromagnets
With electromagnets, the magnetic field can be changed quickly. This is possible by controlling the amount of electric current in the winding. However, an electromagnet requires a constant current supply, only then can it maintain the magnetic field. Electromagnets are supplied with different voltages and thus consume different current. There are modules integrated with control electronics, which is an option especially recommended for beginners who plan to implement the electromagnet in an electronic system. The frequent use of electromagnets includes access control systems. We then use holding electromagnets which hold the door to prevent it from opening. And how do we open such doors? The electronic system receives an appropriate signal from the lock control system, which is a card reader or code keypad. The solenoid coil is de-energized, which means that it no longer attracts the metal plate to the door and can be successfully opened. Due to such properties of electromagnets they are used in access control systems.
Furthermore, they work well in many other electronic projects. They are present in electrical machines, bells, speakers and relays. Electromagnets are also used in alarm systems, which are one of the security features of the building and its surroundings, and are part of monitoring. They can also be found in cathode ray tubes and magnetic railways and devices that use nuclear magnetic resonance.