Power supply unit having circuit for protecting ground

A power supply device having a circuit for ground protection is disclosed. The power supply device having a circuit for ground protection comprises: a power protecting unit which is connected to a live line and a neutral line in a fire alarm control panel or various control panels to cut off power supplied to an operation and control circuit when overcurrent occurs in the operation and control circuit; a surge protecting unit which is connected to the power protecting unit and configured to have multiple stages for protection against surge introduced to the live line and neutral line; power noise filter unit which is connected to the surge protecting unit to remove noises; a first removing unit for internal use which removes current and potential leakages generated by device of the surge protecting unit and devices of the power noise filter unit; a first removing unit for external use which suppresses or removes various harmful components and noises introduced into an enclosure of the fire alarm control panel or the various control panels and into a ground line; and a second removing unit which removes remaining surge, electrical abnormal signals, and noises that was not removed by the first removing unit for internal use and the first removing unit for external use.