Swiss technology and engineering giant ABB has the green light from U.S. authorities to buy an American company for nearly $4 billion. 

The purchase of Thomas & Betts would increase ABB’s low voltage product business in North America 10-fold, according to the company. 

The offer of $72 a share must still be approved by Thomas & Betts’ shareholders at an annual meeting Wednesday.

European and Canadian authorities also still need to approve the deal.