SULTAN (acronym for SUpraLeiter TestANlage) is the major facility for testing and evaluating high current superconductors for the next generation of fusion magnets. Located at Paul Scherrer Institut PSI in Villigen, Switzerland, the facility was constructed in the late seventies as a common venture of three European Laboratories: ENEA (Italy), ECN (Netherlands), and SIN (Switzerland). Since 1994 SULTAN is operated by EPFL-CRPP and is offered by the European Commission as contribution to the worldwide cooperation for the development of the International Thermonuclear Experimental Reactor ITER. In the facility, prototype and R&D conductor samples can be tested over a wide range of operating conditions; typical studies include experiments on critical current, AC losses, stability, and fatigue effects.