A system for ceiling-only fire protection of a storage occupancy having a ceiling defining a nominal ceiling height of 9.14m (thirty feet) or greater, the system comprising: a plurality of fluid distribution devices disposed beneath the ceiling and above a high-piled storage commodity in the storage occupancy having a nominal storage height ranging from a nominal 6.10m (20 ft.) to a maximum nominal storage height of 16.76m (55 ft.), the storage commodity including any one of Class I, II, III or IV, Group A, Group B, or Group C plastics, elastomers, rubber, and exposed expanded plastic commodities, the plurality of fluid distribution devices including a fluid distribution device with a frame body having an inlet, an outlet, a sealing assembly, and an electronically operated releasing mechanism supporting the sealing assembly in the outlet; and means for quenching a fire (100a,b,c) in the storage commodity, the electrically operated releasing mechanism is a strut and lever assembly with a designed fracture region including: a hook member having a first end and a second end; a strut member having a first end and a second end, the first end of the strut member being in contact with the hook member between the first and second ends of the hook member to define a fulcrum; a load member acting on the hook member on a first side of the fulcrum to define a first moment arm; a link extending between the hook and strut members having a fracture region to maintain the hook member in a static position with respect to the strut member to define the unactuated state of the assembly, the link being engaged with the hook member on a second side of the fulcrum opposite the first side of the fulcrum with respect to the load member to define a second moment arm; and an actuator coupled to one of the hook and strut members to apply a force between the hook and strut members that breaks the fracture region of the link such that the hook member pivots about the fulcrum to define the actuated state of the trigger assembly. a plurality of fluid distribution devices disposed beneath the ceiling and above a high-piled storage commodity in the storage occupancy having a nominal storage height ranging from a nominal 6.10m (20 ft.) to a maximum nominal storage height of 16.76m (55 ft.), the storage commodity including any one of Class I, II, III or IV, Group A, Group B, or Group C plastics, elastomers, rubber, and exposed expanded plastic commodities, the plurality of fluid distribution devices including a fluid distribution device with a frame body having an inlet, an outlet, a sealing assembly, and an electronically operated releasing mechanism supporting the sealing assembly in the outlet; and means for quenching a fire (100a,b,c) in the storage commodity, the electrically operated releasing mechanism is a strut and lever assembly with a designed fracture region including: a hook member having a first end and a second end; a strut member having a first end and a second end, the first end of the strut member being in contact with the hook member between the first and second ends of the hook member to define a fulcrum; a load member acting on the hook member on a first side of the fulcrum to define a first moment arm; a link extending between the hook and strut members having a fracture region to maintain the hook member in a static position with respect to the strut member to define the unactuated state of the assembly, the link being engaged with the hook member on a second side of the fulcrum opposite the first side of the fulcrum with respect to the load member to define a second moment arm; and an actuator coupled to one of the hook and strut members to apply a force between the hook and strut members that breaks the fracture region of the link such that the hook member pivots about the fulcrum to define the actuated state of the trigger assembly. a hook member having a first end and a second end; a strut member having a first end and a second end, the first end of the strut member being in contact with the hook member between the first and second ends of the hook member to define a fulcrum; a load member acting on the hook member on a first side of the fulcrum to define a first moment arm; a link extending between the hook and strut members having a fracture region to maintain the hook member in a static position with respect to the strut member to define the unactuated state of the assembly, the link being engaged with the hook member on a second side of the fulcrum opposite the first side of the fulcrum with respect to the load member to define a second moment arm; and an actuator coupled to one of the hook and strut members to apply a force between the hook and strut members that breaks the fracture region of the link such that the hook member pivots about the fulcrum to define the actuated state of the trigger assembly.