The ABB ACS310-03U-19A4-2 is an ultra-compact 19.4 Ampere, 5.5 kW (7.5 HP) variable frequency drive from the ACS310 series, which is specifically engineered for Pump and Fan Control. It is designed as a space-saving, "all-in-one" solution for HVAC and fluid handling applications, offering intelligent features and a durable, integrated interface in a very small package.