These permanent solenoids are electrically powered on / off systems. They consist of a permanent magnet
and a DC excited coil to neutralize the permanent magnetic field at the poles.
These systems are used in a powerless state where a load, a workpiece or machine parts must be
held reliably and safely. The housing is completely zinc plated and the coil is vacuum-stoppered.
This electrical permanent magnet pulls when it is not supplied power, and releases when it gets power.
The opposite from our regular electro magnets.
ED's is a percentage measure of the connection time. If the magnet are supposed to work shorter (lower ED),
you can increase voltage and get more power.
This electro permanent magnet has a maximum working time of 8 seconds per minute!
Stated force is in ideal conditions without safety factor.