• Model:SQS400-1ECL

Quietflow SQS400-1ECL - Centrifugal Box Fan

£ 2,284.66 (excl. VAT)

£ 2,741.59 (inc. VAT)


Quietflow SQS400-1ECL - Centrifugal Box Fan

• Standard size 400 mm
• Air volume flow rates up to 1.051 m3/s
• Static pressures up to 839 Pa
• Suitable for operating temperatures up to +60℃
• Robust galvanised sheet steel casing
• Available in EC
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.

2 x Elta Variable Speed Drive IP66 - 2.2KW1 x Helios TSD 3.0 Transformer Speed Control (400v)1 x FU 15 40 Frequency Inverter1 x Elta Variable Speed Drive IP66 - 7.5KW1 x FRQ5-4A V2 Inverter Speed Controller1 x FRQ-10A V2 Inverter Speed controller1 x Frequency converter RUCK - FU 075 201 x Elta Variable Speed Drive IP66 - 4.0KW1 x Frequency converter FU 075 14 - IP661 x FU 22 25 Frequency Inverter1 x Elta Variable Speed Drive IP66 - 0.75KW1 x FU 15 16 Frequency Inverter1 x Elta Variable Speed Drive IP66 - 5.5KW1 x FRQ5-10A Inverter Speed controller1 x Elta Variable Speed Drive IP66 - 1.5KW1 x Helios - FIUK-11KW 24.0A - FREQUENCY INVERTER1 x ELTA - Three Phase Transformer 10amps1 x ATEX rated 3-phase Speed Control - R-DK4 KT (EX)1 x Elta Variable Speed Drive IP66 - 2.2KW (1ph to 3ph)1 x Elta 10 Amp Electronic single phase speed controller.1 x Frequency converter RUCK - FU 075 211 x ELTA - Single Phase Transformer 2amps1 x NKS-D swirl diffuser v-300 x 300mm1 x Balance S Diffuser - NO RING - 125mm2 x Electronic extractor fan speed controller - FSC 1.51 x EC6H - Reversible Group Fan Electronic Controller1 x Circular Ceiling Diffuser - TST 1251 x Circular Ceiling Diffuser - TST 1001 x Elta 2 Amp Electronic single phase speed controller.1 x PCA Diffuser - PCA-3151 x Curved Blade Grille 600x600 (2way blow)2 x Elta 3 Amp Electronic single phase speed controller with TK1 x Round ceiling diffuser 400mm1 x JSR 200 Painted RAL50181 x EFSC-3N- Single Phase Speed Control2 x Elta 6 Amp Electronic single phase speed controller with TK1 x ELTA - Single Phase Transformer 16amps1 x ELTA - Single Phase Transformer 8amps1 x Circular Ceiling Diffuser - TST 2001 x 5-Speed Controller for use with Elta SAX Classic Fans1 x Airvent ceiling fan controller1 x Circular Ceiling Diffuser - TST 1601 x ELTA - Single Phase Transformer 12amps1 x ELTA - Single Phase Transformer 4amps1 x AIRVENT speed control - AIR4019611 x Balance S Diffuser - NO RING - 100mm1 x EFSC-6N- Single Phase Speed Control1 x Elta 6 Amp Electronic single phase speed controller.1 x Round ceiling diffuser 300mm1 x Round ceiling diffuser 250mm1 x PCA Diffuser - PCA-2501 x ELTA - Single Phase Transformer 10amps1 x Round ceiling diffuser 350mm1 x Run On Timer - 5s - 4hrs - RT5A2 x Remote Timer Control - 13513 x Push Timer Switch - ZA41 x Helios ZNE Electronic Fan Overrun Timer2 x Multi Input Run On Timer - 0 - 20min - CFCU1 x 7 Day Programmable TIMECLOCK1 x ACO8AC/EC AutoChangeover panel1 x TTC-2000 Three phase electric heater controller1 x Elta ACO Panel 149-ACO14E1 x EC-Vent control board1 x EM30-24 Electro-Mechanical Control Panel1 x CONTROL ECOWATT - Basic1 x ACO 149-ACO1/EDV1 x Elta ACO Panel 149-ACO18B1 x EC-Vent Room Unit1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 6301 x EM30-24 Control Panel Commissioning Service1 x U-EK plastic housing IP65 - for use with the U-EK230E Motor Protection1 x Easy-fix termination kit - High Rise Ventilator - EFT1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 3551 x Elta Wall Cowl SWC56/631 x GRA-100 External Grill by S&P1 x Elta Louvre Shutter - 400mm1 x Elta Wall Cowl SWC25/311 x Elta Wall Cowl SWC35/401 x Elta Wall Cowl SWC45/501 x Egg Crate Grille with G2 Dust panel filter 1 inch- 300x3001 x Jet Cowl - 315mm1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 7101 x Egg Crate Grille with Dust panel filter 1 inch- 595x5951 x Single Deflection Grille 400mm with OBD damper2 x Vent Axia ACM 150 inline mixed flow duct fan1 x Envirovent Silent MV160/100T Mixvent - Timer Model - 100mm - (5 year warranty)2 x Envirovent G4 Filter - SL-G4/F72 x CPTA-S PIR SENSOR Volt Free Contacts - Surface Mounted1 x Speed Controller - REB51 x Quietflow SQS400-1ECL - Centrifugal Box Fan1 x PIR Sensor - PIR21 x MTS10- extractor fan 3 step switch1 x Vent Axia ACM 100 T (Timer Model) inline mixed flow duct fan2 x Vent Axia ACM 125 T (Timer Model) inline mixed flow duct fan1 x HCFC 1.7 - Reversible Speed Controller for HCF sweep fans1 x Helios TSW 7.5 Amp Transformer speed controller2 x Transformer 5 Speed Controller - ATC1-4TK1 x REU 7amp Speed control - Two Speed Five-Step Transformer - Trickle and Boost1 x Transformer 5 Speed Controller - ATC1-12TK2 x Three Phase Transformer controllers - RMT 1.5 Amp1 x Helios TSW MCB Amp Transformer speed controller1 x Helios TSW 1.5 Amp Transformer speed controller1 x Vent Axia ACM 200 inline mixed flow duct fan1 x Vent Axia ACM 125 inline mixed flow duct fan1 x Isolator Switch - ISOSW1 x Single phase speed controller by auto-transformer - RMB 1.5 Amp1 x TG-K Duct temperature sensor1 x BEAS-control module1 x COM-31 x MWS 1.5 – Transformer Controller With Motor Protection1 x Vent Axia T-Series Controller1 x TG-K3/NTC10-01 - Duct temperature sensor1 x Transformer (silent) speed controller - RE 3.0 Amp1 x Helios HQW-200/4 - IP551 x Multiflow SMB550/4-1AC1 x Commercial Single or 3 phase Fan Reversing Switch - RS11 x FAST-TRACK RANGE 75mm - Click Ring (1 bag of 10)1 x Transformer (silent) speed controller - RE 5.0 Amp1 x REB-CVF 0-10v Controller1 x Speed Controller - REB1-N1 x MTP 10, 10K, Speed control1 x Silent 100 Window Kit - windowS2 x Transformer 5 Speed Controller - ATC1-8TK2 x Transformer 5 Speed Controller - ATC1-10TK1 x Helios TSW 3 Amp Transformer speed controller1 x Remote controller FLEX - for VEKO INT1 x Systemair Save Connect 2.0 Internet Module1 x RDS 11 Helios Transformer Controller With Motor Protection1 x MV-B Dual Switch for use with Helios HQW plate fans,1 x CS2 Current Switch1 x DEF-140T Inlet Guard for the CBT-100N1 x MWS 3 – Transformer Controller With Motor Protection1 x Single phase speed controller by auto-transformer - RMB 3.5 Amp
Reviews
TD-SILENT 350/125
TD-SILENT 350/125
£ 178.68

Excellent low noise fan, I've got one unit running years and...