• Model:SQS250-1ECL

Quietflow SQS250-1ECL - Centrifugal Box Fan

£ 1,259.39 (excl. VAT)

£ 1,511.27 (inc. VAT)


Quietflow SQS250-1ECL - Centrifugal Box Fan

• Standard size 250 mm
• Air volume flow rates up to 0.347 m3/s
• Static pressures up to 841 Pa
• Suitable for operating temperatures up to +60℃
• Robust galvanised sheet steel casing
Acoustically lined single in-line centrifugal fans, suitable for internal duct mounting. The Quietflow incorporates advanced backward curved impellers, with three ndimensional profiled blades.

Low Noise
Each unit is acoustically lined internally with Class O rated (BS 476 Parts 6 and 7) fire resistant acoustic foam lining minimising breakout noise levels.

Easy Installation
New multi-mount brackets allow easy mounting in a range of orientations.

Easy Commissioning
Integrated commissioning control allowing single speed selection and also limiting maximum speed if used with an external potentiometer.

Efficient Performance
High efficiency low tonal noise backward curved centrifugal impellers are directly driven by an EC external rotor motor, provide low specific fan powers and stepless speed control without tonal noise generation.

Weather Resistance
Units can be weatherproofed in the factory to allow external installation.

PDF Files


SQS250-1ECL Specification Sheets

2 x Remote Timer Control - 13512 x Envirovent Silent MV160/100T Mixvent - Timer Model - 100mm - (5 year warranty)4 x Single phase speed controller by auto-transformer - RMB 1.5 Amp3 x COM-31 x Push Timer Switch - ZA43 x Isolator Switch - ISOSW3 x MWS 3 – Transformer Controller With Motor Protection1 x Helios ZNE Electronic Fan Overrun Timer1 x Elta 3 Amp Electronic single phase speed controller with TK1 x CS2 Current Switch1 x Time Delay Unit - DT20B1 x Multi Input Run On Timer - 0 - 20min - CFCU1 x ACOAS/ AC/EC Auto Changeover 8Amp1 x TTC-2000 Three phase electric heater controller3 x Elta 6 Amp Electronic single phase speed controller with TK3 x Systemair Save Connect 2.0 Internet Module2 x TG-K Duct temperature sensor1 x 7 Day Programmable TIMECLOCK3 x Single phase speed controller by auto-transformer - RMB 8.0 Amp1 x Single phase speed controller by auto-transformer - RMB 3.5 Amp2 x Helios HQW-200/2 - IP551 x Elta ACO Panel 149-ACO14E1 x Two Speed Switch - REGUL-21 x CONTROL ECOWATT - Basic1 x EM30-24 Electro-Mechanical Control Panel2 x CPTA-S PIR SENSOR Volt Free Contacts - Surface Mounted1 x HCFC 1.7 - Reversible Speed Controller for HCF sweep fans1 x BEAS-control module1 x Single phase speed controller by auto-transformer - RMB 10.0 Amp2 x Transformer 5 Speed Controller - ATC1-12TK2 x TG-K3/NTC10-01 - Duct temperature sensor1 x EC-Vent control board2 x MWS 1.5 – Transformer Controller With Motor Protection5 x WS - Reversing Switch from Helios Fans2 x Elta Variable Speed Drive IP66 - 0.75KW2 x Elta Variable Speed Drive IP66 - 0.37KW (1ph to 3ph)1 x ACO 149-ACO1/EDV4 x Helios HQW-200/4 - IP551 x Elta ACO Panel 149-ACO18B1 x Isolator Switch - EFF-ISO1 x EC6H - Reversible Group Fan Electronic Controller1 x CBS-60 Outlet Flange for CSB/CBT-603 x Speed Controller - REB102 x Helios HQW-630/4 - IP552 x Transformer Speed Control - RTRE- 7.0Amp3 x CBM Low Pressure Centrifugal Fan - CBM 10/10 4 Pole 550watt CVR1 x EM30-24 Control Panel Commissioning Service1 x MTP 10, 10K, Speed control1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 6301 x U-EK plastic housing IP65 - for use with the U-EK230E Motor Protection1 x S&P MULTI-REG EC FAN CONTROLLER / INTERFACE1 x Vent Axia ACM 125 T (Timer Model) inline mixed flow duct fan2 x Commercial Single or 3 phase Fan Reversing Switch - RS11 x CBM Low Pressure Centrifugal Fan - CBM 10/10 4 Pole 550watt VR2 x PIR Sensor - PIR21 x Vent Axia T-Series Controller4 x Transformer (silent) speed controller - RE 3.0 Amp2 x REE-1 Electronic Speed Controller2 x TG-R room temperature sensor1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 5001 x Multiflow SMB550/4-1AC1 x Elta 6 Amp Electronic single phase speed controller.1 x Easy-fix termination kit - High Rise Ventilator - EFT2 x Quietflow SQS400-1ECL - Centrifugal Box Fan1 x Elta - Room Sensor - Temp/Humid/C021 x Helios HQW-315/4 - IP551 x CMT-2 120/50 - 0,09Kw - LG270 Single inlet centrifugal fan direct driven1 x Skyflow SSR Horizontal Roof Cowl SSR31/35BS2 x SG-200 Fan Guard for the HQW 2001 x TecFire Intumescent Damper - Rectangular 350x350mm1 x MV-B Dual Switch for use with Helios HQW plate fans,2 x Transformer (silent) speed controller - RE 1.5 Amp2 x DDMP 12-12 3F 5700W M6M0 DG71 x KMBI 180 Connector rectangular/circular to install on the discharge of CMT1 x CMT-2 200/80 1.1KW - Single inlet centrifugal fan direct driven1 x Envirovent G4 Filter - SL-G4/F71 x EC-Vent Room Unit1 x TD Mixvent 800/200 EEXEIIT31 x Speed Controller - REB81 x HIMF - Mixed Flow Fan 100mm Inline Fan1 x TG-K Duct temperature sensor1 x GXC6EC - High Performance Extract Fan1 x Elta Variable Speed Drive IP66 - 1.5KW (1ph to 3ph)1 x Speed Controller - REB11 x Helios PU10 Speed Potentiometer (Flush Mounted)
BD7/7 centrifugal M4 0.13Kw
BD7/7 centrifugal M4 0.13Kw
£ 345.00 now £ 300.00
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