Arc extinguishing system and isolating switch

An arc extinguishing system and an isolating switch relate to the technical field of low-voltage electric appliances. The arc extinguishing system comprises a permanent magnet and a grid plate group. The grid plate group is positioned on at least one side of the third direction of the permanent magnet and is arranged at an interval with the permanent magnet; the attraction force of the permanent magnet to the electric arc generated at the moving contact and the static contact of the isolating switch is greater than the attraction force of the grid plate group to the electric arc generated at the moving contact and the static contact; and the permanent magnets are used for guiding the electric arc to the grid plate group under the magnetic field action of the permanent magnets. The arc extinguishing system and the disconnecting switch can improve the arc extinguishing capability of the arc extinguishing system. 一种灭弧系统及隔离开关，涉及低压电器技术领域。该灭弧系统包括永磁铁和栅片组；栅片组位于永磁铁的第三方向的至少一侧且与永磁铁间隔排布，永磁铁对隔离开关的动触头和静触头处产生的电弧的吸力大于栅片组对动触头