The present invention relates to a blocking device (4) for a damper drive, wherein the blocking device (4) can be transferred by activation from an inoperative state into an alternative activated state. The blocking device (4) comprises a movably mounted blocking element (41) which, in a blocking position, blocks an output member (13) in a safety position. The blocking device (4) further comprises a drive element (42) which, when the blocking device (4) is activated, moves the blocking element (41) into the blocking position. The blocking device further comprises an activating element (43) which, when a blocking temperature has been exceeded, activates the blocking device (4) by an irreversible change in shape. Also disclosed are a damper drive with a blocking device, a fire protection device and a method for operating a fire protection device.

An energy storage system according to one or more embodiments of the present disclosure includes: a container; a plurality of accommodation portions in the container and configured to accommodate a battery rack or an air conditioner; a partition wall between each pair of adjacent accommodation portions; a ventilation hole passing through the partition wall and connecting with the adjacent accommodation portions; and a blocking member configured to selectively open or close the ventilation hole.

An assembly includes a thermoelectric tripping device, a flange, and a gland. The thermoelectric tripping device is configured to be detachably coupled with a damper. The thermoelectric tripping device includes an extending arm including a fuse configured to trip at a pre-defined temperature. The flange is configured to be coupled to a surface of the damper. The gland is defined by a pair of fixtures positioned in-line with each other and having a passage configured therewithin to facilitate passage of the extending arm therethrough. A first fixture of the pair of fixtures is configured to be coupled with the flange, and a second fixture of the pair of fixtures is configured to be detachably coupled with the extending arm.

A fire and/or smoke curtain includes a roller, a fire and smoke curtain, and a retaining mechanism. The mechanism comprising an end plate for holding an end of the roller, a brake disc attached to the end of the roller. A connector attaches to the brake disc, the connector having a hook or ring element attached to a release mechanism comprising a lock element secured to the end plate at a proximal end, having a stop at its distal end and provided with a hook element onto which the hook or ring element of the connector is fitted, sliding lock element adapted to slide along a fixed plate, from a secure position in which the sliding lock is adapted to hold the hook or ring, and a release position, in which the hook or ring is released, releasing the brake to allow rotation of the roller and deploy the curtain.

A generator enclosure for an engine-generator includes multiple walls defining at least one air path. In one example, a first wall includes an exhaust path for the engine-generator, and a second wall includes an intake path for the engine-generator. The generator enclosure may include at least one air flow frame associated with the exhaust path or the intake path and at least one movable wall supported by the at least one air flow frame. At least one thermal fuse may be coupled to the at least one movable wall and configured to release the at least one movable wall to block the exhaust path or the intake path.