The Fluke 792A-7004 A40 Shunt Adapter is designed for use with the Fluke 792A AC/DC Thermal Transfer Standard and the Fluke A40 Series of Ac/DC Precision Current Shunts. The shunt adapter also requires either the A45-4003 (A40 Series), or A45-4004 (A40A Series) Input Cable for connection to the precision shunt.