A pot magnet is a permanent magnet encased in a steel shell, which is sometimes called a pot, hence the name ‘pot’ magnet.
A permanent magnet emits a magnetic field without the need for any electricity.
Magnetic field lines of a pot magnet
The steel shell helps the pot magnet by increasing its holding power and providing the magnet with added strength and stability.
Magnetic down light being held by a stud pot magnet
Pot magnets are often used as magnetic bases and magnetic holders for large supermarket ceiling signs.
Types of pot magnet: bi-pole, countersunk, internal threaded, stud and through hole
There are five forms of pot magnet: bi-pole, countersunk, through hole, internal threaded, and stud.