Multiflow SEL355 2 1AC Flow Inline Fan Single Phase AC 355mm

The Elta Multiflow SEL355/2-1AC is a 355mm mixed flow inline duct fan with a single phase 2 pole AC motor, moving up to 4939 m³/h in free air and 4734 m³/h against 100 Pa. A diagonal mixed flow impeller and 3D stator guide vanes give it far more pressure than an axial fan of the same diameter.The motor runs at 2776 rpm on 220 to 240V 50Hz, absorbing 0.955 kW at its best efficiency point with integral thermal overload protection, and it is wired through an integral IP44 terminal box. The casing is weatherproofed to IPX4, the fan mounts at any angle on its integral bracket, and Elta give a 12 month warranty. 1 Phase AC Motor Up to 4939 m³/h Speed Controllable What it is best used forHigh volume, high pressure systems on 355mm duct from a single phase supply: commercial kitchen extract, sports halls, changing rooms, warehouse offices and long supply runs with heater batteries and filters. It holds 4734 m³/h at 100 Pa and still 3557 m³/h at 500 Pa.At 0.955 kW and up to 5.1 A it needs its own circuit and the 8 A transformer controller. It is a loud 2 pole fan (59 dB(A) inlet, 63 dB(A) outlet at 3m), so if your system resistance is under 150 Pa the quieter SEL355/4-1AC is the better choice.Why choose this over alternativesThis is the strongest single phase SEL in Elta's datasheet: 4939 m³/h free air and 3557 m³/h at 500 Pa from a 355mm casing. The 4 pole SEL355/4-1AC on the same size uses 0.150 kW instead of 0.955 kW and is 16 dB(A) quieter at the inlet, but only suits low resistance systems.Installation notes The fan can be mounted in any orientation. Slide it into the duct and fix it with the integral mounting bracket, making sure the ductwork is not strained, and connect duct to both inlet and outlet so no moving parts are accessible. Elta recommend padded connection sleeves or fast clamps (018-355-CLAMP) to cut noise transmitted into the ductwork. Run the airflow in the direction marked on the casing. Wire into the integral IP44 terminal box to Elta diagram 152-540. Elta specify the 149-TC18 5 step transformer controller (8 A) for speed control; at lower steps the fan runs at 2530, 2295 and 1825 rpm. The internal thermal protection does not protect the motor if the impeller is blocked, so where that could happen fit a motor protection switch with thermal and magnetic release. Fit a means of isolation and earth the fan. Install indoors in a dry, condensation free space: Elta's installation manual says SEL fans must not be operated out of doors, and they are not for explosive atmospheres. Clean the impeller and casing at the recommended intervals; an upstream filter extends them. You'll also need Elta 149-TC18 single phase 5 step transformer controller (8 A), the controller Elta specify for this fan. Elta fast clamps 018-355-CLAMP (each) and backdraught damper 018-355-DAMPER, available to order, ask us. Elta spigot silencers 068-0355-JF1 (300mm) to 068-0355-JF4 (1200mm), available to order, ask us. Browse more inline mixed flow fans, inline duct fans or Elta fans, or call us for help choosing the right fan.Specifications Model SEL355/2-1AC Type Mixed flow inline duct fan Duct size 355mm Max airflow 4939 m³/h Static pressure 500 Pa Motor Single phase AC, 220 to 240V 50Hz, 2 pole, 2776 rpm Power 0.955 kW (4.3 A) Noise 59 dB(A) inlet, 63 dB(A) outlet at 3m IP rating IPX4 casing, IP44 terminal box Warranty 1 Year Manufacturer Airflow at 100 Pa 4734 m³/h Airflow at 200 Pa 4500 m³/h Overall efficiency 50.5% at best efficiency point FMEG efficiency grade N 61.2 Max ambient temperature 45°C (nameplate) Breakout noise 42 dB(A) at 3m Weight 17 kg Speed controller 149-TC18 (5 step transformer) Wiring diagram 152-540 Manuals & Guides Elta Multiflow SEL Datasheet Elta Multiflow SEL Installation Manual