SQU50 350 EC 1 Qube Centrifugal Box Fan Single Phase EC 350mm

The Elta Qube SQU50/350-EC-1 is a centrifugal box fan with a 350mm backward curved impeller in a 500mm cube casing, for supply or extract air up to +50°C. It moves up to 3586 m³/h at free air on full (10V) speed and 2185 m³/h at 500 Pa, the highest pressure in Elta's performance table for this model.The single phase IE6 EC motor (220-277V 50/60Hz) is IP55, has a built in variable speed drive with protection against overload, over temperature and locked rotor, and takes a 2-10V, 4-20mA, PWM or potentiometer speed signal. The impeller is EN-AW 5754 aluminium, non-overloading and balanced to G6.3, inside an extruded aluminium frame with 25mm double skinned, mineral wool filled panels that can be moved to give a 90° or straight through airflow. Elta give a 24 month warranty. 1 Phase EC Motor Up to 3586 m³/h Speed Controllable What it is best used forGeneral supply or extract on a ducted system: a shop sales floor, a college workshop, a changing room block or make-up air for a kitchen. Elta list kitchens, schools, colleges, shops, sports halls, factories, industrial units and warehousing among typical uses. It moves 3586 m³/h free air and about 3100 m³/h against 200 Pa; at that 200 Pa figure it gives roughly 10 air changes an hour in a space of about 310 m³.It is the wrong fan for hot extract: the Qube SQU is for an airstream up to +50°C, and Elta state it is not suitable for corrosive or explosive atmospheres. For hot or grease laden kitchen canopy extract, choose a Qube SQUHT high temperature box fan, which keeps the motor out of the air stream and is rated to +120°C in the duct.Why choose this over alternativesAn EC Qube needs no separate inverter: the drive is built into the motor, so speed is set from a simple potentiometer or a 2-10V BMS signal, and turning it down saves energy. At 7.5V this model gives 2563 m³/h free air and at 5V 1588 m³/h, so one fan can be commissioned to the exact duty. The Elta SQU50/350-4-3 is the AC version in the same box size, which runs at fixed speed or from a separate inverter.For less air, the Elta SQU50/315-EC-1 gives 2246 m³/h free air. For more, the Elta SQU67/450-EC-1 gives 7132 m³/h. For hot or greasy air up to +120°C, the Elta SQUHT50/350-EC-1 is the high temperature version with the same box and impeller size.Installation notes The fan can be mounted at any angle. It arrives set up for 90° airflow; move the panels to make it straight through if your duct runs in line. Make sure it is adequately supported, as it weighs 35 kg. Leave access to the panels: they are fixed with multi thread U nuts and lift off for cleaning and maintenance. Elta recommend an inspection at least every 12 months. Wire to Elta diagram 152-733 with a means of isolation. For external speed control from the 149-POT-10-MI or a BMS, remove the jumper on the control board. Elta give maximum control cable lengths of 30m for a voltage signal and 10m for PWM. Disconnect the fan before any insulation resistance testing, as the test can damage the EC electronics and that is not covered by warranty. The motor has an auto reset thermal contact, so isolate the supply before working on it because it can restart once cool. Elta rate the Qube for ambient temperatures of -20°C to +50°C and up to 95% relative humidity. Site the discharge so it cannot pull flue gases back from any open flued appliance. You'll also need Elta EC Electronic Controller 149-POT-10-MI for manual speed control (Elta's listed controller for this fan). Elta electric heater battery 018-RH70/40-21-3TP, if you need to temper supply air. Available to order, ask us. Browse more commercial box fans, commercial extractor fans or Elta fans, or call us for help choosing the right fan.Specifications Model SQU50/350-EC-1 Type Centrifugal box fan, EC Size 350mm impeller, 500mm box Max airflow 3586 m³/h Static pressure 500 Pa Motor Single phase EC, 220-277V 50/60Hz, 1810 rpm at 10V Power 0.572 kW at 10V (3.96 A peak at 230V) Noise 57 dB(A) inlet, 59 dB(A) outlet, 48 dB(A) breakout at 3m IP rating IP55 motor Warranty 2 Year Manufacturer Max air temperature +50°C airstream Airflow at 100 Pa 3341 m³/h Airflow at 200 Pa 3100 m³/h Airflow at 7.5V / 5V 2563 / 1588 m³/h free air Speed control Integrated drive: 2-10V, 4-20mA, PWM or potentiometer Straight through airflow 3308 m³/h free air at 10V (figures above are 90° configuration) Inlet / outlet 430mm / 440mm Box dimensions 500 x 500 x 500mm Overall efficiency 58.6% Wiring diagram Elta 152-733 Weight 35 kg Manuals & Guides Elta Qube SQU Datasheet Elta Qube SQU Installation and Maintenance Manual