• Model:EFSC

Electronic extractor fan speed controller - EFSC

£ 33.06 (excl. VAT)

£ 39.67 (inc. VAT)

A range of Electronic Fan Speed Controllers designed for speed controllable single phase motors up to 10 amps.
The EFSC3,5,6 & 10 all have an illuminated on/off rocker switch and a stepless rotary knob for speed adjustment.
These controllers do not have TP/TK connections, any fans with these connections available should use suitable matching controllers, such as the EFSC with TK.

EFSC Range Features
• All models supplied with surface mount backing box
• Minimum & Maximum speed internal pre-set adjusters on all models
• Suitable for 2 or 3 wire control
• Electronic stepless speed control
• Easy to install

Physical Dimensions

150mm x 85mm x 40mm

Notes for engineers: If wanting to use 3 wire control, the capacitor will have to be disconnected from Live and fed to the Aux on the EFSC instead. (If the motor is supplied in this configuration, which is normally the case.)
This is a controlled Live controller. If the capacitor is connected to Neutral on the motor (controlled Neutral configuration) and you want to use 3 wire connection, U1 & U2 will have to be reversed for the fan to run in the correct direction.
3 wire control gives better starting torque, less heat generation and is preferred in all respects.

If in doubt use the 2 wire connection the the fan, as described in the instructions.
PDF Files


Data Sheet

Available Options

1 x Curved Blade Grille 600x600 (2way blow)1 x TTC-2000 Three phase electric heater controller1 x ACOAS/ AC/EC Auto Changeover 8Amp2 x ACO8AC/EC AutoChangeover panel1 x EC-Vent control board1 x Elta ACO Panel 149-ACO14E1 x CONTROL ECOWATT - Basic1 x ACO 149-ACO1/EDV1 x EM30-24 Electro-Mechanical Control Panel1 x U-EK plastic housing IP65 - for use with the U-EK230E Motor Protection1 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 Elta ACO Panel 149-ACO18B1 x EC-Vent Room Unit2 x EM30-24 Control Panel Commissioning Service1 x Speed Controller - REB11 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 3551 x Elta Wall Cowl SWC56/631 x Elta Wall Cowl SWC35/401 x Elta Wall Cowl SWC25/311 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 7101 x Jet Cowl - 315mm1 x Egg Crate Grille with G2 Dust panel filter 1 inch- 300x3001 x Non Vision 150mm x 150mm (Air Transfer) Grille - With Flange - MILL FINISH1 x NKS-D swirl diffuser v-300 x 300mm1 x Circular Ceiling Diffuser - TST 1251 x REU 7amp Speed control - Two Speed Five-Step Transformer - Trickle and Boost1 x Balance S Diffuser - NO RING - 125mm1 x PCA Diffuser - PCA-3151 x Round ceiling diffuser 400mm1 x Versio Square Ceiling Diffusers - RS141 x JSR 200 Painted RAL50181 x Balance S Diffuser - NO RING - 100mm2 x Round ceiling diffuser 200mm1 x PCA Diffuser - PCA-2501 x Transformer 5 Speed Controller - ATC1-2TK1 x Vent Axia ACM 150 inline mixed flow duct fan1 x Helios TSW 3 Amp Transformer speed controller1 x Transformer 5 Speed Controller - ATC1-4TK1 x Vent Axia ACM 200 inline mixed flow duct fan1 x Vent Axia ACM 125 inline mixed flow duct fan1 x TG-K Duct temperature sensor1 x CMT-2 200/80 1.1KW - Single inlet centrifugal fan direct driven1 x Elta 6 Amp Electronic single phase speed controller with TK1 x Single phase speed controller by auto-transformer - RMB 10.0 Amp1 x Envirovent Silent MV160/100T Mixvent - Timer Model - 100mm - (5 year warranty)1 x KMBI 180 Connector rectangular/circular to install on the discharge of CMT1 x Speed Controller - REB51 x Speed Controller - REB101 x Transformer Speed Control - RTRE- 7.0Amp1 x REE-2 Electronic Speed Controller1 x Speed Controller - REB1-N1 x Transformer (silent) speed controller - RE 5.0 Amp1 x CBM 9-9 550w 4P VR (Open Motor)1 x PIR Sensor - PIR21 x MTP 10, 10K, Speed control1 x Transformer Speed Control - RTRE- 5.0Amp1 x Transformer Speed Control - RTRE- 1.5Amp1 x MEV Spider Wireless boost Switch - MEV-SWH-W1 x Speed Controller - REB81 x Bathroom Fan -Envirovent- Silent 100 T (Timer Model)1 x PIR Sensor - PIR41 x QPTW 250C Acoustic Twin Fan with Controller1 x CBM Low Pressure Centrifugal Fan - CBM 10/10 4 Pole 550watt CVR1 x Silentub - STUB 1001 x GENIOX 11 Internal Mounted Unit1 x AIRVENT speed control - AIR4019611 x EBM-Papst D4E225-BC01-17 Double inlet1 x CBM Low Pressure Centrifugal Fan - CBM 10/10 4 Pole 550watt VR1 x Vertical Cowl and Fan (Single Phase) - RAV400-4-11 x Potentiometer EGH 01 - for DDMP Fans1 x Flat Roof Terminal -OFT 5 - Asphalt1 x CBT-80N Centrifugal1 x 100mm Round Connector with Damper1 x ACO3TO-ADS-VFC-7.1A1 x Quietflow Twin SQTDCV250-1ECL1 x CBB-60N Centrifugal1 x Mini Diffuser - 100mm1 x DDMP 07/07 Mounting Flange1 x Run On Timer - 5s - 4hrs - RT5A1 x CBM Low Pressure Centrifugal Fan - CBM 9/9 4 Pole 550watt C VR1 x CAD-COMPACT 900 ADVANCED N8 - MVHR unit1 x Egg Crate Grille with Dust panel filter 1 inch- 300x3001 x Speed Controller - REB2.5-N1 x Vent Axia ACM 100 T (Timer Model) inline mixed flow duct fan1 x Remote Timer Control - 13511 x Silent 100 Window Kit - windowS1 x Skyflow SSR Horizontal Roof Cowl SSR80B1 x Vent Axia Silent 100T (TIMER)1 x Elta 6 Amp Electronic single phase speed controller.1 x CBM Low Pressure Centrifugal Fan - CBM 9/7 4 Pole 373watt CVR1 x Duct Termination with Mesh - 100mm1 x EBM-Papst D3G133-BF05-14 Double inlet1 x AXC TP - 150mm Plastic Centrifugal Inline Fan1 x Universal Pipe Fixing Clip1 x DEF-CBM-RE-7 - Protection Guard1 x CBP-9/7-RC
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