Elta Multiflow SMB650/4-3AC Inline Mixed Flow Box Fan Three Phase AC - 650mm

The Elta Multiflow SMB650/4-3AC is a 650mm square inline mixed flow box fan with a three phase AC motor, moving up to 10480 m³/h in free air and still delivering 3503 m³/h against 500 Pa. It fits straight into 650mm ductwork on Ductmate flanges at each end.The 4 pole motor runs at 1320 rpm on a 380 to 415V 50Hz supply, absorbing 1.433 kW with a peak current of 2.89 A, and has sealed for life bearings. The casing is stiffened pre-galvanised sheet steel, the impeller has 7 backward curved aerofoil blades in high performance composite, and it handles air up to 60°C. Elta give a 12 month warranty. 3 Phase AC Motor Up to 10480 m³/h Speed Controllable What it is best used forHigh volume three phase extract and supply on 650mm ductwork: large commercial kitchen canopies, restaurants and food courts, plant rooms, warehouse and workshop ventilation, and general HVAC in larger commercial buildings. It moves 9670 m³/h at 100 Pa and still 7495 m³/h at 300 Pa, so it suits long, fitting heavy duct runs.It is more fan than a short run or small space needs; drop to the SMB550/4-3AC under about 7000 m³/h. For more than about 10000 m³/h at working pressure, use the SMB700/4-3AC.Why choose this over alternativesThe three phase SMB650/4-3AC moves 10480 m³/h in free air against 7974 m³/h for the single phase SMB650, and it draws 2.89 A per phase at 400V where the single phase model takes 5.28 A at 230V. On a site with three phase available it is the stronger and easier to supply option.Against the SMB550/4-3AC it adds about 2500 m³/h in free air and holds far more at high pressure (3503 against 914 m³/h at 500 Pa). For even larger volumes see the SMB700/4-3AC.Installation notes Mount the fan at any angle in the duct, securely supported, and leave access for maintenance. It weighs 47 kg. Connect with the 650mm Ductmate flanges at each end. Elta's 650mm flexible connectors (063-0650-MFB) and anti vibration mounts (062-003) reduce transmitted noise and vibration. Wire to Elta diagram 152-1