Electro magnet 20mm diameter x 15mm height, 12 volt DC, power 1.8 watt, holding force 5kg, minimum thickness of counter plate 2.mm Freight on this item is calculated on your Australian Post Code .
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An electromagnets are a magnet created by electricity. The electric current is what creates the magnetic field. So, you can control the magnetism with an on/off switch, unlike permanent magnets. This can be very useful in many applications when you only need a magnetic field for specific periods.