Retainer for door temporized firebreak. Designed to keep the doors opened firebreak. The action of the equipment is effected on having stopped applying 24V with a temporización of 3 seconds. Force of retention of 60Kg/600N. I consume: 85mA to 24V. Equipped with plate ferromagnética articulated. Supplied with box, push-button of unfreezing and arm of 300 mm.