The invention belongs to the technical field of relays, in particular to an
overcurrent protection
relay, which includes a base, a movable slot, a protective shell, a side door, a bottom plate, a first link, a second link, a connecting shaft, a fixed cylinder, a slider, a first spring, a connecting rod, a second spring, a connecting block, a fixing block, a fixing plate, a heat dissipation hole, an ash-proof net, a side cover, a ventilation slot, a
refrigeration tube, a
semiconductor refrigeration sheet, a heat dissipation cavity, a fan, a mounting bracket, a
relay body , a
micro motor, a gear, a first rack plate, a mounting plate, a second rack plate, a side plate, a movable plate, a fixing rod, a wire incoming slot, a through slot, a pulling rod, a limiting slot, a third spring, a fixingcolumn, a clamping plate, a wire incoming plate and a clamping slot. The fan operates to drive air to enter the ventilation slot from the air inlet hole at one end of the side cover, the air is cooled through the
refrigeration tube and the
semiconductor refrigeration sheet in the ventilation slot and is then transmitted to the inner part of the protective shell, the
relay body in the case of operation is thus cooled, and the service life of the relay is improved.