KVD 225/4/50/25 EX – Helios – InlineVent – Rectangular fan
Duct centrifugal fan for direct mounting in a rectangular duct system, explosion-proof according to ATEX.
Housing made of galvanized sheet steel with standardized channel flange profiles on both sides, space-saving design, easy to service due to the swiveling motor-impeller unit.
Forward curved drum impeller made of galvanized steel, good efficiency, low noise.
Aerodynamically optimized spiral casing;Inflow via nozzle. Impeller motor unit dynamically balanced.
Drive: three-phase external rotor motor, explosion-proof according to ATEX, closed design, maintenance-free, sealed. Low-noise ball bearings with long-term lubrication, built-in PTC thermistor.
Speed control is permitted when connecting the PTC thermistor to the MSA tripping device (however, the minimum voltage must not fall below 100 V).