The children, who were rescued from various parts of the city, were aged between 10-12 and were engaged in selling toys on the roadside and handicraft items, police said.
The three accused -- Jiteshwar (25), Biki Kumar (21) and Mohammed (30) -- were produced before a local court and remanded.
The children, who do not have even basic education, had been brought to the city with a promise that they would be sent to schools, police said.