What is a Lifting Permanent Magnet ?
A lifting Permanent Magnet is composed of two sets of permanent magnets: one set of magnets with fixed polarities, and one set of magnets with reversible polarities. A DC current pulse in different directions through the inside solenoid coil around the latter reverses its polarities and makes in two statuses: with or without external holding force. The device needs the DC current pulse for less than one second in order to be activated and deactivated. During the whole period of lifting a load the device doesn’t need any electricity any more.