ABB HVAC Drives
ABB manufactures HVAC variable frequency drives from 1 HP to 550 HP for the ultimate in flexible motor control. Complete line of enclosed electrical products for the HVAC industry to include: Combination Starters, Across the Line Starters, Disconnect Switches, and Softstarters. Technical Services include: authorized VFD start-ups, preventative maintenance plans and energy saving audits.
More info at http://www.abb.us/drives