Multi Smoke Square Damper for Fire Ventilation

MSD

Multi Smoke Damper (MSD)

Multi Smoke Dampers (MSD) are essential components in smoke exhaust duct systems, specifically engineered to effectively remove smoke, heat, and combustion products from fire-affected compartments. In the event of a fire, the fire ventilation system automatically opens the damper in the affected section, facilitating the rapid extraction of harmful substances. These dampers are fire-resistant and designed for systems with automatic activation, suitable for installation within the fire compartment construction.

Key Features

CE certified according to EN 12101-8.
Fire resistance classification EI 120 (according to EN 13501-4+A1).
Minimum external casing leakage class C (according to EN 1751).
Available in square and round versions.
Controlled by an electrical actuating mechanism (Belimo, Schischek).
Can be installed in any position (horizontal or vertical blade axis).
Body made of galvanized plate, blades from fire-resistant asbestos-free mineral fiber boards.

Technical Data

Parameter	Value
Nominal Voltage	AC 24V/230V or DC 24V (depending on actuator)
Degree of Protection	IP 54 (for Belimo actuators), IP 66 (for Schischek InMax)
Ambient Temperature Range (operating)	-20°C to +50°C
Ambient Temperature Range (non-operating)	-40°C to +80°C
Maximum Air Velocity	15 m/s
Maximum Underpressure	-1500 Pa
Maximum Overpressure	500 Pa
Internal Leakage Classification	min. class 2 (round), min. class 2 (square)