• 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.

1 x FRQ-10A V2 Inverter Speed controller1 x Helios TSD 3.0 Transformer Speed Control (400v)2 x Elta Variable Speed Drive IP66 - 2.2KW1 x FU 075 52 Frequency Inverter (IP20)1 x Helios VDS-7 Three Phase Transformer 5-Step1 x FU 22 25 Frequency Inverter1 x ATEX rated 3-phase Speed Control - R-DK4 KT (EX)1 x ELTA - Three Phase Transformer 3amps1 x Elta Variable Speed Drive IP66 - 2.2KW (1ph to 3ph)1 x FRQ5-10A Inverter Speed controller1 x ELTA - Three Phase Transformer 10amps1 x FU 15 16 Frequency Inverter1 x Elta Variable Speed Drive IP66 - 5.5KW1 x Elta 10 Amp Electronic single phase speed controller.1 x Elta Variable Speed Drive IP66 - 1.5KW2 x Elta Variable Speed Drive IP66 - 4.0KW1 x Frequency converter RUCK - FU 075 201 x Helios - FIUK-11KW 24.0A - FREQUENCY INVERTER1 x Circular Ceiling Diffuser - TST 1251 x FU 075 04 Frequency Inverter (IP20)1 x Frequency converter RUCK - FU 075 212 x NKS-D swirl diffuser v-300 x 300mm1 x FU 22 04 Frequency Inverter1 x Circular Ceiling Diffuser - TST 1001 x Circular Ceiling Diffuser - TST 2001 x PCA Diffuser - PCA-3151 x Curved Blade Grille 600x600 (2way blow)1 x Round ceiling diffuser 400mm1 x Balance S Diffuser - NO RING - 125mm1 x ELTA - Single Phase Transformer 2amps1 x Balance S Diffuser - NO RING - 100mm2 x EC6H - Reversible Group Fan Electronic Controller1 x Versio Square Ceiling Diffusers - RS141 x Circular Ceiling Diffuser - TST 1602 x Electronic extractor fan speed controller - FSC 1.51 x Round ceiling diffuser 200mm1 x Elta 2 Amp Electronic single phase speed controller.1 x EFSC-3N- Single Phase Speed Control1 x Round ceiling diffuser 250mm1 x Round ceiling diffuser 300mm1 x ELTA - Single Phase Transformer 8amps1 x Elta 3 Amp Electronic single phase speed controller.1 x ELTA - Single Phase Transformer 16amps1 x Elta 3 Amp Electronic single phase speed controller with TK1 x Elta 6 Amp Electronic single phase speed controller with TK1 x Elta Variable Speed Drive IP66 - 0.37KW (1ph to 3ph)1 x AIRVENT speed control - AIR4019611 x ELTA - Single Phase Transformer 4amps1 x ELTA - Single Phase Transformer 12amps1 x Round ceiling diffuser 350mm1 x Airvent ceiling fan controller1 x Elta Variable Speed Drive IP66 - 0.75KW (1ph to 3ph)1 x PCA Diffuser - PCA-2501 x EFSC-6N- Single Phase Speed Control2 x Elta 6 Amp Electronic single phase speed controller.1 x Elta Variable Speed Drive IP66 - 1.5KW (1ph to 3ph)1 x ELTA - Single Phase Transformer 10amps1 x Remote Timer Control - 13511 x Run On Timer - 5s - 4hrs - RT5A1 x Helios ZNE Electronic Fan Overrun Timer3 x Push Timer Switch - ZA41 x Time Delay Unit - DT20B2 x Multi Input Run On Timer - 0 - 20min - CFCU1 x 7 Day Programmable TIMECLOCK1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 5001 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 6301 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 Elta Wall Cowl SWC35/401 x GRA-100 External Grill by S&P1 x Elta Louvre Shutter - 400mm1 x Elta Wall Cowl SWC25/311 x Elta Wall Cowl SWC45/502 x REB-CVF 0-10v Controller1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 7101 x Jet Cowl - 315mm1 x Egg Crate Grille with Dust panel filter 1 inch- 595x5951 x Single Deflection Grille 400mm with OBD damper1 x Vent Axia ACM 150 T (Timer Model) inline mixed flow duct fan1 x REE-2 Electronic Speed Controller2 x PIR Sensor - PIR22 x PIR Sensor - PIR42 x Vent Axia ACM 100 T (Timer Model) inline mixed flow duct fan2 x Single phase speed controller by auto-transformer - RMB 1.5 Amp3 x Transformer (silent) speed controller - RE 3.0 Amp3 x QPTW 250C Acoustic Twin Fan with Controller2 x MTS10- extractor fan 3 step switch1 x FRQ5-4A V2 Inverter Speed Controller1 x Frequency converter FU 075 14 - IP661 x COM-31 x UB47- Universal Insulated Terminal1 x Vent Axia ACM 200 inline mixed flow duct fan2 x Vent Axia ACM 125 T (Timer Model) inline mixed flow duct fan3 x Vent Axia ACM 125 inline mixed flow duct fan1 x CPTA-E Flush mounted PIR sensor with timer1 x Remote controller FLEX - for VEKO INT1 x HCFC 1.7 - Reversible Speed Controller for HCF sweep fans2 x Transformer 5 Speed Controller - ATC1-8TK1 x Helios TSW 3 Amp Transformer speed controller1 x Transformer 5 Speed Controller - ATC1-4TK2 x MWS 3 – Transformer Controller With Motor Protection2 x CS2 Current Switch2 x Single phase speed controller by auto-transformer - RMB 8.0 Amp2 x Helios HQW-200/2 - IP551 x WS - Reversing Switch from Helios Fans2 x Two Speed Switch - REGUL-22 x Transformer Speed Control - RTRE- 12.0Amp2 x Helios HQW-630/4 - IP552 x REE-1 Electronic Speed Controller1 x Vent Axia T-Series Controller2 x Skyflow SSR Horizontal Roof Cowl SSR31/35BS2 x DEF-CBM-RE-7 - Protection Guard1 x Commercial Single or 3 phase Fan Reversing Switch - RS12 x CBM Low Pressure Centrifugal Fan - CBM 12/12 6 Pole 736watt CVR1 x Biflow SB400-CON2-3 - High Temperature Bifurcated Fan1 x Vent Axia ACM 150 inline mixed flow duct fan1 x Three Phase Transformer controllers - RMT 1.5 Amp
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