SSDL125 1EC T Singleflow Centrifugal Box Fan Single Phase EC 125mm

The Elta SSDL125-1EC-T is a 125mm Singleflow SSDL centrifugal box fan with long circular inlet and outlet spigots and a pre-fitted terminal box. It moves up to 601 m³/h in free air, 493 m³/h at 200 Pa and still 302 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 3555 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 601 m³/h Speed Controllable What it is best used forExtract from washrooms, changing rooms, small kitchenettes and single offices on 125mm duct, especially in schools, hotels and offices where the fan needs to sit in a plant space, ceiling void or on a roof. At 100 Pa it moves 547 m³/h, roughly 10 air changes an hour in a room of about 55 m³.If the duct is short and the space is indoors, a simple inline fan may do the job for less money. 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 125mm SSDL with circular spigots and terminal box. Pick this version for circular ductwork when you want a pre-fitted terminal box for a tidy, quick electrical connection and an easy disconnect point for maintenance. 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 SSDL125-1EC (circular spigots), Elta SSDL125-1EC-R (rectangular spigots) and Elta SSDL125-1EC-RT (rectangular spigots with terminal box).It sits in the middle of the three small casing sizes, all with the same 0.97 A motor and 15 kg weight. At 100 Pa it gives 547 m³/h, against 446 m³/h for the Elta SSDL100-1EC-T and 605 m³/h for the Elta SSDL150-1EC-T, so match it to your duct size rather than stepping up a size on the same spigot.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 125mm flexible or rigid circular duct directly; secure each joint with a clamp. 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-SEL03 available to order, ask us Elta fast clamps 018-125-CLAMP and spigot silencers 068-0125-JF1 to JF4 (300 to 1200mm long) available to order, ask us Elta heater battery 018-CV12-12-1M and panel filter 018-0125-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 SSDL125-1EC-T Type Centrifugal box fan, circular spigots, terminal box Size 125mm circular spigots Max airflow 601 m³/h Static pressure 500 Pa Motor Single phase EC, 220-240V 50/60Hz, 3555 rpm Power 113 W at best efficiency point (0.97 A peak) Noise 53 dB(A) inlet, 54 dB(A) outlet, 45 dB(A) breakout at 3m IP rating IP44 motor Warranty 1 Year Manufacturer Airflow at 100 Pa 547 m³/h Airflow at 200 Pa 493 m³/h Airflow at 500 Pa 302 m³/h Spigots 125mm circular inlet and outlet Electrical connection Pre-fitted terminal box Speed control Built-in commissioning potentiometer, 0-10V or external potentiometer input Overall efficiency 37.4% at best efficiency point SFP at 100 Pa 0.73 W/(L/s) Casing 1.2mm galvanised mild steel, acoustically lined Operating temperature -20°C to +60°C, up to 90% RH Weight 15 kg Wiring diagram 152-712 ErP Regulation (EU) 1253/2014, NRVU Manuals & Guides Elta Singleflow SSDL Datasheet Elta Singleflow SSDL Installation Manual