The utility model discloses a multi -stage series connection clearance thunderbolt flashover protector for 10kV takes spheric electrode, including electrode, zinc oxide arrester and support cross arm, the electrode is the spheric electrode, and the spheric electrode is fixed in zinc oxide arrester's high -pressure side, forms the first order discharge gap who provides thunderbolt flashover passageway between high -pressure wire and zinc oxide arrester, support the cross arm and for zigzag support cross arm, include last cross arm, lower cross arm and connect the perpendicular cross arm of going up cross arm and lower cross arm, go up the cross arm with the fixed screw of low -pressure end has been opened down on the cross arm respectively. The utility model discloses a two -stage pure air gap structure of establishing ties, discharge path that can effective control discharge arc guarantees that thunderbolt flashover protector can effective action, and it is can force rate zero clearance zinc oxide arrester stronger to put off arc, and the residual voltage of discharging far is lighter than the flashover voltage of insulator, the fixed screws of two low -pressure ends according to the difference of line insulator height, can be used to to adjust the installation distance of spheric electrode and high -pressure wire.