On Line Uninterrupted Power Supply System is available in a power range varying from 1 KVA to 400 KVA. The Uninterrupted Power Supply System is provided with protection against short circuit, thermal, battery low or high, mains MCB trip etc. With comprehensive display. The Uninterrupted Power Supply System ensures low third harmonic distortion in a range of less than 3%. On Line Uninterrupted Power Supply System is equipped with auto sense intelligent control smart charger and voltage and current regulation control.