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Electromagnets

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.

Products: 47
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Electromagnet 12V 21W 150g

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-08072
Index: MOD-08072
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Regular price €6.49 Price €6.49

Electromagnet 12V 3,5W 4kgf

The holding electromagnet powered with the voltage of 12 V with a power of 3.5 W. It holds a weight of 4 kg in standard earth acceleration of 9.8 m/s2. Case diameter is 25 mm,...
Index: MOD-04599
Index: MOD-04599
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Regular price €10.23 Price €10.23

Electromagnet holding 12V 1W 1kgf

Holding electromagnet, supplied with 12 V . At standard ground acceleration (9.82 m/s2) it holds a mass of 1 kg . The current consumption is approx. 80 mA, the rated power is...
Index: DNG-17565
Index: DNG-17565
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Regular price €8.12 Price €8.12

Electromagnet holding 6V 2.5W 2kgf

The holding electromagnet powered with the voltage of 6 V with a power of 2.5 W. It holds a weight of 2 kg in standard earth acceleration of 9.8 m/s2. Case diameter is 20 mm,...
Index: MOD-03096
Index: MOD-03096
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Regular price €6.95 Price €6.95

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
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Regular price €3.88 Price €3.88

Electromagnet holding 12V 1W 1kgf

A holding electromagnet, which, when given a voltage pulse of 12 V , maintains a mass of 1 kg (at standard ground acceleration of 9.8 m/s2). The current consumption during...
Index: DNG-17566
Index: DNG-17566
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Regular price €8.12 Price €8.12

Pulling electromagnet 12V 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
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Regular price €6.72 Price €6.72

Electromagnet 12V 4,2W 180kgf

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
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Regular price €30.00 Price €30.00

Electromagnet holding 12V 1W 3kgf

A holding electromagnet, which, when given a voltage pulse of 12 V , maintains a mass of 3 kg (at standard ground acceleration of 9.8 m/s2). The device takes about 170 mA,...
Index: DNG-17567
Index: DNG-17567
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Regular price €3.23 Price €3.23

Electromagnet holding 12V 3W 15kgf

Holding solenoid powered by 12 V , with a maximum load capacity of 15 kg at standard ground acceleration of 9.8 m/s2. Current consumption is approximately 250 mA, nominal...
Index: DNG-17571
Index: DNG-17571
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Regular price €4.63 Price €4.63

Electromagnet holding 12V 3W 20kgf

Holding electromagnet, supplied with 12 V . At standard ground acceleration of 9.8 m/s2 it holds a mass of 20 kg . Current consumption during operation is approx. 250 mA,...
Index: DNG-17572
Index: DNG-17572
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Regular price €6.21 Price €6.21

Electromagnet holding 12V 3W 15kgf

Powered by a 12-volt holding electromagnet, which holds a mass of 15 kg at standard ground acceleration (9.8 m/s2). The current consumption during operation is...
Index: DNG-17570
Index: DNG-17570
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Regular price €4.63 Price €4.63

Electromagnet holding 12V 3,5W 25kgf

Holding electromagnet, supplied with 12 V . At standard ground acceleration of 9.8 m/s2 it holds a mass of 25 kg . Current consumption is 300 mA, nominal power is approx. 3.5...
Index: DNG-17573
Index: DNG-17573
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Regular price €6.95 Price €6.95

Electromagnet holding 12V 4W 45kgf

Holding electromagnet, supplied with 12 V . At standard ground acceleration of 9.8 m/s2 it holds a weight of 45 kg . The current consumption of the device is 420 mA, the...
Index: DNG-17577
Index: DNG-17577
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Regular price €11.09 Price €11.09

Electromagnet holding 12V 3,5W 30kgf

Holding electromagnet with a power rating of 3.5 W. Powered by 12 V . Current consumption is approximately 300 mA. The device maintains a mass of 30 kg at standard ground...
Index: DNG-17574
Index: DNG-17574
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Regular price €7.60 Price €7.60

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 at standard ground...
Index: DNG-17578
Index: DNG-17578
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Regular price €11.60 Price €11.60

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
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Regular price €5.56 Price €5.56

Solenoid, coil, 36V electromagnet - SparkFun ROB-10391

The device allows to perform a linear movement, for example, pulling or pushing, using the voltage signal of 12 - 36 V. The range of the bolt is approximately 10 mm.
Index: SPF-02107
Index: SPF-02107
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Regular price €23.02 Price €23.02

Electromagnet holding 12V 6W 60kgf

Holding electromagnet with a rated power of 6 W. For operation it requires a voltage pulse of 12 V . With standard ground acceleration of 9.8 m/s2 the maximum lifting...
Index: DNG-17579
Index: DNG-17579
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Regular price €14.63 Price €14.63

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
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Regular price €5.33 Price €5.33

Electromagnet holding 12V 10W 70kgf

Powered by a 12-volt holding electromagnet, which holds a mass of 70 kg at standard ground acceleration (9.8 m/s2). The current consumption during operation is...
Index: DNG-17580
Index: DNG-17580
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Regular price €18.07 Price €18.07

Electromagnet 12V 13W 5kg

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-08073
Index: MOD-08073
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Regular price €7.42 Price €7.42

Holding electromagnet 12V 8W 20kgf

The holding electromagnet powered with voltage of 12 V and a capacity of 8 W. It holds a weight of 20 kg in standard earth acceleration 9.8 m/s2. The body diameter is 40 mm and...
Index: MOD-04600
Index: MOD-04600
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Regular price €18.37 Price €18.37

Grove - electromagnet 5V 1kgf

Module from the Grove series equipped with holding electromagnet. It h olds a weight of 1 kg in standard earth acceleration of 9.8 m/S2. Body diameter is 20 mm and its height...
Index: SEE-11307
Index: SEE-11307
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Regular price €10.93 Price €10.93

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.