SSDL400 1EC RT Singleflow Centrifugal Box Fan Single Phase EC 400mm

The Elta SSDL400-1EC-RT is a 400mm Singleflow SSDL centrifugal box fan with rectangular inlet and outlet spigots and a pre-fitted terminal box. It moves up to 4414 m³/h in free air, 3722 m³/h at 200 Pa and still 2390 m³/h at 500 Pa, the highest pressure in Elta's published table.A single phase EC external rotor motor (220-240V 50/60Hz) drives a backward curved impeller balanced to ISO1940-1, at up to 1620 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. 1 Phase EC Motor Up to 4414 m³/h Speed Controllable What it is best used forHigh volume ducted extract or supply on 400mm duct in factories, industrial units, warehousing, commercial kitchens and large office floors. At 100 Pa it moves 4090 m³/h, and it holds 2390 m³/h even at 500 Pa, which suits systems with filters, heater batteries and long runs.At 64 kg it needs proper support and access; check the void or roof space against Elta's dimensional drawing first. 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 400mm SSDL with rectangular spigots and terminal box. Pick this version when the fan connects to rectangular ductwork and you also want a pre-fitted terminal box for a quick, tidy electrical connection. 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 SSDL400-1EC (circular spigots), Elta SSDL400-1EC-T (circular spigots with terminal box) and Elta SSDL400-1EC-R (rectangular spigots).It shares its casing size with the Elta SSDL500-1EC-RT. The 500 moves more at low and medium pressure (5184 against 4090 m³/h at 100 Pa), but above about 400 Pa the 400 pulls ahead and gives 2390 m³/h at 500 Pa against 2192, so it is the better single phase choice for a high resistance system.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 inlet and outlet are rectangular spigots for rectangular ductwork. Check the spigot sizes on Elta's dimensional drawing before fabricating the duct connections. A terminal box is pre-fitted to one side; tell us which side when ordering. Elta's drawing shows it adds 74mm to dimension B, so allow for that in tight voids. 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 Browse more commercial box fans, inline duct fans or Elta fans, or call us for help choosing the right fan.Specifications Model SSDL400-1EC-RT Type Centrifugal box fan, rectangular spigots, terminal box Size 400mm (rectangular spigots) Max airflow 4414 m³/h Static pressure 500 Pa Motor Single phase EC, 220-240V 50/60Hz, 1620 rpm Power 754 W at best efficiency point (5.19 A peak) Noise 58 dB(A) inlet, 60 dB(A) outlet, 43 dB(A) breakout at 3m IP rating IP44 motor Warranty 1 Year Manufacturer Airflow at 100 Pa 4090 m³/h Airflow at 200 Pa 3722 m³/h Airflow at 500 Pa 2390 m³/h Spigots Rectangular inlet and outlet Electrical connection Pre-fitted terminal box Speed control Built-in commissioning potentiometer, 0-10V or external potentiometer input Overall efficiency 50.0% at best efficiency point SFP at 100 Pa 0.66 W/(L/s) Casing 1.2mm galvanised mild steel, acoustically lined Operating temperature -20°C to +60°C, up to 90% RH Weight 64 kg Wiring diagram 152-712 ErP Regulation (EU) 1253/2014, NRVU Manuals & Guides Elta Singleflow SSDL Datasheet Elta Singleflow SSDL Installation Manual