The ACS 800 DriveIT low-voltage ac drive family is available in NEMA 1 or NEMA 12 enclosures. All units are designed in a bookshelf style, and units range from 6.5-in. (165 mm) wide low-hp designs up to freestanding 600-hp units measuring 13.75 in. (350 mm) wide. The freestanding enclosures of the drives in the range of 150 to 600 hp turn easily to fit into deep, narrow spaces or wide, shallow spaces. Designed with integral EMC filters and chokes and rated at supply voltages of 230 to 690V, the ACS 800 is backward compatible with ABB's ACS 600 family.