We report the discovery of a new detached eclipsing binary known as NSVS01031772 with component masses M _ { 1 } = 0.5428 \pm 0.0027 M _ { \sun } , M _ { 2 } = 0.4982 \pm 0.0025 M _ { \sun } , and radii R _ { 1 } = 0.5260 \pm 0.0028 R _ { \sun } , R _ { 2 } = 0.5088 \pm 0.0030 R _ { \sun } .
The system has an orbital period of 0.3681414 ( 3 ) days and an apparent magnitude V \simeq 12.6 .
The estimated effective temperatures of the stars are T _ { { eff } _ { 1 } } = 3615 \pm 72 K and T _ { { eff } _ { 2 } } = 3513 \pm 31 K .
The space velocities of the system suggest that it is a main sequence binary and with a metallicity that is approximately solar .
The two stars in this binary are located in a region of the Mass-Radius relation where no accurate observational data was previously available .
Similarly to other low-mass binaries recently studied , the radius of each star in NSVS01031772 exceeds the best evolutionary model predictions by about 8.5 % on average .