SSDL500 3EC Singleflow Centrifugal Box Fan Three Phase EC 500mm

The Elta SSDL500-3EC is a 500mm Singleflow SSDL centrifugal box fan with long circular inlet and outlet spigots and no terminal box. It moves up to 6552 m³/h in free air, 5868 m³/h at 200 Pa and still 4320 m³/h at 500 Pa, the highest pressure in Elta's published table.A three phase EC external rotor motor (380-480V 50/60Hz) drives a backward curved impeller balanced to ISO1940-1, at up to 1555 rpm with an integrated commissioning control for setting speed. The 1.2mm galvanised steel casing is acoustically lined and suitable for external mounting, the IP44 motor has sealed for life bearings and runs in air from -20°C to +60°C, and Elta backs it with a 12 month warranty. 3 Phase EC Motor Up to 6552 m³/h Speed Controllable What it is best used forThe most powerful SSDL, for warehousing, factories, industrial units and large commercial kitchens with a three phase supply and a high resistance 500mm duct system. It moves 6228 m³/h at 100 Pa and still 4320 m³/h at 500 Pa, close to double the single phase 500 at that pressure.It needs a 380 to 480V three phase supply; on a single phase site use the SSDL500-1EC instead. It is not suitable for corrosive or explosive atmospheres, and the airstream must stay within -20°C to +60°C.Why choose this over alternativesThis is the 500mm SSDL with circular spigots. Pick this version for standard circular ductwork when you will wire the fan without a terminal box, using the cable entry on either side. The fan, motor and performance are identical across the four versions, so the choice is only about duct shape and wiring. The same size is also available as Elta SSDL500-3EC-T (circular spigots with terminal box), Elta SSDL500-3EC-R (rectangular spigots) and Elta SSDL500-3EC-RT (rectangular spigots with terminal box).Against the single phase Elta SSDL500-1EC it gives more air everywhere on the curve and the gap widens with pressure: 6228 against 5184 m³/h at 100 Pa, but 4320 against 2192 m³/h at 500 Pa. Peak current is 2.38 A at 400V, against 5.07 A for the single phase version.Installation notes Mount it at any angle, indoors or outside, on drop rods or Elta's SEL anti-vibration mounts (upright or inverted), make sure it is adequately supported, and leave access for maintenance. The long circular spigots take standard 500mm flexible or rigid circular duct directly; secure each joint with a clamp. There is no terminal box on this version; the supply cable enters from either side of the casing. Fit a local means of isolation as the wiring regulations require. Speed is set on the built-in commissioning potentiometer. To use an external potentiometer or a 0-10V BMS signal, remove the jumper link and connect to ST1; the commissioning setting then caps the maximum speed. Disconnect the fan before any insulation resistance testing. Elta warn this can damage the EC electronics and is not covered by warranty. You'll also need Elta EC electronic controller 149-POT-10-MI (the potentiometer controller Elta list for every SSDL size) Elta anti-vibration mounts 062-SEL05 available to order, ask us Elta fast clamps 018-500-CLAMP and spigot silencers 068-0500-JF1 to JF4 (300 to 1200mm long) available to order, ask us Elta panel filter 018-0500-FILT-P for supply duties available to order, ask us Browse more commercial box fans, inline duct fans or Elta fans, or call us for help choosing the right fan.Specifications Model SSDL500-3EC Type Centrifugal box fan, circular spigots Size 500mm circular spigots Max airflow 6552 m³/h Static pressure 500 Pa Motor Three phase EC, 380-480V 50/60Hz, 1555 rpm Power 1.277 kW at best efficiency point (2.38 A at 400V peak) Noise 58 dB(A) inlet, 61 dB(A) outlet, 49 dB(A) breakout at 3m IP rating IP44 motor Warranty 1 Year Manufacturer Airflow at 100 Pa 6228 m³/h Airflow at 200 Pa 5868 m³/h Airflow at 500 Pa 4320 m³/h Spigots 500mm circular inlet and outlet Electrical connection Cable entry either side, no terminal box Speed control Built-in commissioning potentiometer, 0-10V or external potentiometer input Overall efficiency 51.9% at best efficiency point SFP at 100 Pa 0.68 W/(L/s) Casing 1.2mm galvanised mild steel, acoustically lined Operating temperature -20°C to +60°C, up to 90% RH Weight 65 kg Wiring diagram 152-713 ErP Regulation (EU) 1253/2014, NRVU Manuals & Guides Elta Singleflow SSDL Datasheet Elta Singleflow SSDL Installation Manual