We report on the first observation of the Seyfert 1 galaxy NGC 4593 in the 0.1–200 keV band , performed with the BeppoSAX observatory .
Its spectral components are for the first time simultaneously measured : a power-law with photon spectral index \Gamma \simeq 1.9 ; the Compton-reflection of the primary power-law ; a moderately broad ( { \sigma > 60 } eV ) K _ { \alpha } fluorescent line from neutral iron ; and an absorption edge , whose threshold energy is consistent with K-shell photoionization from O vii .
The amount of reflection and the iron line properties are consistent with both being produced in a plane-parallel , X-ray illuminated relativistic accretion disc surrounding the nuclear black hole , seen at an inclination of { \simeq 30 ^ { \circ } } .
Any cutoff of the intrinsic continuum is constrained to lay above 150 keV .
The claim for a strongly variable soft excess is dismissed by our data and by a reanalysis of archival ASCA and ROSAT data .