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The present invention relates to a switchgear with a seismic isolation device using a permanent magnet and, more specifically, to a switchgear with a seismic isolation device, which absorbs a vibration applied from the outside due to an earthquake and the like and a vibration generated inside a power facility and the like by using the seismic isolation device, and thus relieves shock. The switchgear comprises an upper permanent magnet module (10) fixed to the inside of an upper housing (3); a lower permanent magnet module (20) fixed to the inside of a lower housing (4); and a ball bearing (5) disposed between the upper permanent magnet module (10) and the lower permanent magnet module (20), wherein the upper permanent magnet module (10) and the lower permanent magnet module (20) are disposed to face each other, and when an external horizontal vibration occurs, the upper permanent magnet module (10), the lower permanent magnet module (20), and the ball bearing (5) move horizontally relative to each other to absorb the vibration.(AA) PM(N pole)(BB) (S pole)PM(CC) PM(S pole)(DD) (N pole)PMCOPYRIGHT KIPO 2017