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Electro permanent Magnets – Controllable Magnets
Published: 2025-09-10 13:51:39 • Daniel Gårdefelt
Magnets are a fascinating material, something we recently highlighted in our article on magnet mysticism. Magnets are often also a difficult material to handle, with strong force fields that can suddenly attract nearby magnetically receptive materials. But there are also types of magnets that can be controlled, or at least steered, for example by using electricity.
One example is electromagnets, where the product is magnetic when it is supplied with electricity. A disadvantage of these types of magnets is that they need a constant supply of electricity to maintain their magnetism.
An alternative to electromagnets are electropermanent magnets. Electropermanent magnets use electricity to control the magnetic pole direction. Simply put, they are magnetic when not powered. When powered, they become non-magnetic.
Examples of applications for electro-permanent magnets include door holders on fire doors, lifting magnets in the steel industry, magnetic chucks on machining equipment, grippers in robots, as well as various types of safety devices where components must be held in place until they are actively released.
HYAB has a wide range of both electromagnets and electro permanent magnets. Contact us on +46 8 26 10 80 or [email protected] and we can tell you more about their areas of application in your particular business.
