Tripping mechanism and low-voltage switch

The utility model relates to the technical field of low-voltage electric appliances, and particularly discloses a tripping mechanism and a low-voltage switch, and the tripping mechanism comprises a mechanism seat and a lock catch structural member. A rotating shaft is arranged on the mechanism seat in a penetrating manner, the lock catch structural member is mounted on the mechanism seat and is in direct contact with the rotating shaft, and on the plane where at least one cross section of the rotating shaft is located, the mechanism seat and the lock catch structural member jointly surround the cross section; the mechanism seat and the lock catch structural member are both provided with abutting surfaces extending in the radial direction of the rotating shaft. The mechanism seat is connected with the lock catch structural part through an elastic part, and the elastic part enables the two abutting surfaces to abut in the rotating direction of the rotating shaft through elastic thrust; the mechanism seat and th