When activated provides a clamping, locking or holding mechanism
Eclipse Magnetics understands the needs of the product designer, machine designer, electrical engineer, safety manager and end user. Electro-holding magnets can be simple electromagnets or electropermanent magnets. Electromagnets are a wound copper coil with a central steel core within a steel housing– they only create magnetism and clamp onto mild steel when a dc electrical current is present (energize to hold).
Electropermanent magnets are electromagnets with permanent magnets inside them as well – the magnet clamps to the mild steel when no current is applied but when the dc current is applied the magnetic paths change and clamping is stopped (energize to release). The energize to release electromagnets are always "on" when no current is present.
Example: A company required a system to clamp mild steel sections and move them around within a confined area, ideally with the ability to clamp and release on a robotic system. We supplied them with energize to release electropermanent magnets that they can control automatically at a distance to their requirements.