Jetflow SJMF 125 Inline Flow Fan Single Phase EC 125mm

The Elta Jetflow SJMF125 is a 125mm inline mixed flow circular duct fan with a single phase EC motor, moving up to 288 m³/h in free air and 169 m³/h against 200 Pa. Its jet design double mixed flow impeller is driven directly by a brushless EC motor running at 5000 rpm, absorbing 0.027 kW at full speed.The IPX4 motor has sealed for life heavy duty NWB bearings and is rated for air up to 60°C. It arrives with a 1.5m mains lead and UK 3 pin plug (3A fuse) for fixed speed running, plus a detachable 5m jack lead for a potentiometer, 0-10V or PWM speed signal. Elta give a 24 month warranty. 1 Phase EC Motor Up to 288 m³/h Speed Controllable What it is best used forSmall commercial extract on 125mm duct: a run of two or three WCs, a shower room, a staff kitchenette or a small meeting room in an office or school. It keeps 245 m³/h at 100 Pa and 169 m³/h at 200 Pa, so it can push through a long duct run with bends, a backdraught shutter and a grille.At 288 m³/h free air it is not enough for a classroom or a cafe kitchen. For that, use the Elta SJMF150.Why choose this over alternativesWithin the Jetflow range, the SJMF125 sits between the SJMF100 (241 m³/h free air) and the SJMF150. It has the same plug-in EC design as its siblings, so the choice comes down to duct size and duty: at 100 Pa this size delivers 245 m³/h for 0.027 kW.It is supplied ready to run at fixed full speed on its fitted UK plug, and the detachable 5m jack lead lets you add an Elta 149-POT-10-MI controller, a 0-10V signal or PWM later without rewiring the mains side. Elta's SFP at full speed in free air is 0.3 W/(L/s).Installation notes The fan can be mounted at any angle. Fix it securely to a solid surface and leave access for cleaning and maintenance. Connect to 125mm duct with Elta fast clamps (018-125-CLAMP) or flexible connectors so the fan can be removed later. Elta recommend silencers on the inlet and outlet in noise sensitive areas. Mains connection is by the fitted 1.5m lead and UK 3 pin plug with a 3A fuse. The fan is supplied for fixed speed; for speed control, remove the 3.5mm jack plug and connect the supplied jack cable to a 149-POT-10-MI, 0-10V or PWM signal (wiring diagram 152-553). Do not supply it through a timer or a regularly switched circuit: the EC motor has internal overload protection and may restart unexpectedly once it cools. Indoor use only, ambient -10°C to +60°C, not for corrosive or explosive atmospheres. Locate the discharge so exhaust cannot be drawn back through the open flue of a gas or solid fuel appliance, and inspect and clean the fan at least every 12 months. You'll also need Elta EC electronic controller 149-POT-10-MI, the potentiometer controller Elta list for this fan. Elta fast clamps 018-125-CLAMP (each) and backdraught damper 018-125-DAMPER, available to order, ask us. Elta spigot silencers 068-0125-JF1 (300mm) to 068-0125-JF4 (1200mm), available to order, ask us. What's in the box Jetflow fan with 1.5m mains lead and UK 3 pin plug Detachable 5m lead with 3.5mm jack for speed control Browse more inline mixed flow fans, inline duct fans or Elta fans, or call us for help choosing the right fan.Specifications Model SJMF125 Type Inline mixed flow circular duct fan Duct size 125mm Max airflow 288 m³/h Static pressure 200 Pa Motor Single phase EC, 220 to 240V 50/60Hz, 5000 rpm Power 0.027 kW (0.26 A peak) Noise 47 dB(A) inlet, 48 dB(A) outlet at 3m IP rating IPX4 motor Warranty 2 Year Manufacturer Max air temperature 60°C Airflow at 100 Pa 245 m³/h Airflow at 200 Pa 169 m³/h Overall efficiency 42.7% at best efficiency point Weight 1.1 kg Impeller Jet design double mixed flow, direct drive Bearings Sealed for life heavy duty NWB Electrical connection 1.5m lead with UK 3 pin plug, 3A fuse Speed control 149-POT-10-MI, 0-10V or PWM via 5m jack lead Wiring diagram 152-553 Manuals & Guides Elta Jetflow SJMF Datasheet Elta Jetflow SJMF Installation Manual