deluge -u console -a "config -s max_download_speed -1.0"

[junkacc]

deluge -u console -a "config -s max_download_speed -1.0"

This doesn't work when typed into console or as a cron job. Deluge doesn't like the -1.0 at the end. It works for any positive value though.

[andar]

Yea, just use 0 instead, it's the same as -1