Dante Rebori, communications leader for the plant, said cancellation of the shift that begins about 4:30 p.m. will affect about 50 of the 250 employees at the plant on East Sunshine Street.
Day shift employees have been sent home for the day as well, he said.
The plant has a problem with electric power coming into the building, Rebori said.
Regal-Beloit manufactures electric motors, mechanical and electrical motion controls and power generation products.
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