Assfalg can help you with our electropermanent battery lifting magnets from the SB series.
Our SB200 in the special version with pole shoes, which can be inserted into U-profiles or T-slots, are screwed on, but can also be removed again.
The Elektropermanent battery lifting magnet is switched automatically by a current pulse within seconds or manually at the push of a button.
 

https://www.assfalg-metall.de/en/magnets/lifting/with-battery-power/sb200-sb500-sb950