• Model:RTRDU2.0

RTRDU 3 Phase Trickle & Boost 5 Step Speed Controller - 2 Amps

£ 734.99 (excl. VAT)

£ 881.99 (inc. VAT)


A three-phase transformer which controls the fan speed by altering the supply voltage in five fixed steps. The steps are adjusted manually, using the control knobs on the front of the unit.

There are two control knobs: one for higher fan speeds and one for lower fan speeds. Switching between the high and low settings is done by an external change-over contact, which could be a thermostat or a timer.

An integral motor protection device is included which cuts the supply voltage to the fan if the thermal contact in the fan motor is activated. The unit is reset by turning the switch to 0 for 10 seconds, after which the unit restarts.

Input terminals for room thermostat RT cuts supply voltage to the fan when the circuit is broken. Terminals are linked before delivery. The indicator lamp on the front shows when the transformer is in operation.

The transformer has 230V terminals for operating dampers, electric heater batteries or other external equipment. These terminals have no current when the transformer switch is in position 0, or when the TK or RT input is open. Supply voltage: 400V 50/60Hz.
PDF Files


Data sheet

3 x Remote Timer Control - 13511 x Run On Timer - 5s - 4hrs - RT5A1 x Helios ZNE Electronic Fan Overrun Timer3 x Multi Input Run On Timer - 0 - 20min - CFCU1 x Time Delay Unit - DT20B1 x 7 Day Programmable TIMECLOCK1 x Elta Variable Speed Drive IP66 - 7.5KW1 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 FU 075 52 Frequency Inverter (IP20)1 x FRQ5-4A V2 Inverter Speed Controller1 x Frequency converter FU 075 14 - IP661 x Elta Variable Speed Drive IP66 - 0.75KW1 x FU 22 25 Frequency Inverter1 x Elta Variable Speed Drive IP66 - 5.5KW1 x Elta Variable Speed Drive IP66 - 1.5KW1 x Frequency converter RUCK - FU 075 201 x Elta Variable Speed Drive IP66 - 4.0KW1 x Elta Variable Speed Drive IP66 - 2.2KW (1ph to 3ph)1 x FRQ5-10A Inverter Speed controller1 x FU 15 16 Frequency Inverter1 x Elta 10 Amp Electronic single phase speed controller.1 x ELTA - Three Phase Transformer 10amps1 x ELTA - Three Phase Transformer 3amps1 x ATEX rated 3-phase Speed Control - R-DK4 KT (EX)1 x FU 22 04 Frequency Inverter1 x Frequency converter RUCK - FU 075 211 x Helios - FIUK-11KW 24.0A - FREQUENCY INVERTER1 x FU 075 04 Frequency Inverter (IP20)1 x ELTA - Single Phase Transformer 2amps1 x NKS-D swirl diffuser v-300 x 300mm1 x Balance S Diffuser - NO RING - 125mm1 x Circular Ceiling Diffuser - TST 1251 x PCA Diffuser - PCA-3152 x HCFC 1.7 - Reversible Speed Controller for HCF sweep fans2 x Electronic extractor fan speed controller - FSC 1.51 x Circular Ceiling Diffuser - TST 1001 x EC6H - Reversible Group Fan Electronic Controller1 x Curved Blade Grille 600x600 (2way blow)1 x Circular Ceiling Diffuser - TST 2001 x Elta 2 Amp Electronic single phase speed controller.1 x Round ceiling diffuser 400mm1 x Elta 3 Amp Electronic single phase speed controller with TK1 x 5-Speed Controller for use with Elta SAX Classic Fans1 x JSR 200 Painted RAL50183 x Airvent ceiling fan controller1 x ELTA - Single Phase Transformer 8amps1 x ELTA - Single Phase Transformer 16amps1 x Circular Ceiling Diffuser - TST 1601 x Elta 3 Amp Electronic single phase speed controller.1 x EFSC-3N- Single Phase Speed Control1 x ELTA - Single Phase Transformer 12amps1 x Balance S Diffuser - NO RING - 100mm1 x Round ceiling diffuser 200mm1 x ELTA - Single Phase Transformer 4amps1 x COM-31 x AIRVENT speed control - AIR4019611 x Round ceiling diffuser 300mm1 x EFSC-6N- Single Phase Speed Control1 x Round ceiling diffuser 250mm1 x PCA Diffuser - PCA-2501 x Elta 6 Amp Electronic single phase speed controller.1 x Round ceiling diffuser 350mm1 x ELTA - Single Phase Transformer 10amps3 x Helios TSW 7.5 Amp Transformer speed controller1 x TTC-2000 Three phase electric heater controller1 x ACOAS/ AC/EC Auto Changeover 8Amp1 x ACO8AC/EC AutoChangeover panel1 x Elta ACO Panel 149-ACO14E1 x CONTROL ECOWATT - Basic1 x EC-Vent control board1 x EM30-24 Electro-Mechanical Control Panel1 x ACO 149-ACO1/EDV1 x Elta ACO Panel 149-ACO18B1 x Systemair Save Connect 2.0 Internet Module1 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 EC-Vent Room Unit1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 5001 x EM30-24 Control Panel Commissioning Service1 x Easy-fix termination kit - High Rise Ventilator - EFT1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 3551 x REB-CVF 0-10v Controller1 x Elta Wall Cowl SWC56/631 x GRA-100 External Grill by S&P1 x Elta Louvre Shutter - 400mm1 x Elta Wall Cowl SWC35/401 x Elta Wall Cowl SWC25/311 x Elta Wall Cowl SWC45/501 x CMT-2 200/80 1.1KW - Single inlet centrifugal fan direct driven1 x KMBI 180 Connector rectangular/circular to install on the discharge of CMT1 x Egg Crate Grille with G2 Dust panel filter 1 inch- 300x3001 x UB47- Universal Insulated Terminal1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 7101 x Egg Crate Grille with Dust panel filter 1 inch- 595x5952 x Vent Axia ACM 150 inline mixed flow duct fan2 x Push Timer Switch - ZA42 x FAST-TRACK RANGE 75mm - Click Ring (1 bag of 10)1 x Vent Axia ACM 150 T (Timer Model) inline mixed flow duct fan2 x Remote controller FLEX - for VEKO INT1 x Transformer 5 Speed Controller - ATC1-4TK1 x Helios TSW 1.5 Amp Transformer speed controller1 x Vent Axia ACM 125 inline mixed flow duct fan2 x Single phase speed controller by auto-transformer - RMB 1.5 Amp2 x Helios HQW-630/4 - IP551 x Transformer (silent) speed controller - RE 3.0 Amp2 x MTP 10, 10K, Speed control1 x Bathroom Fan -Envirovent- Silent 100 T (Timer Model)1 x QPTW 250C Acoustic Twin Fan with Controller2 x MEV Spider Wireless boost Switch - MEV-SWH-W1 x Transformer Speed Control - RTRE- 1.5Amp2 x Vent Axia ACM 100 T (Timer Model) inline mixed flow duct fan2 x Helios TSW MCB Amp Transformer speed controller1 x DDMP 12-12 3F 1810W M6A4 DG01 x Transformer 5 Speed Controller - ATC1-2TK2 x REU 1.5amp Speed control - Two Speed Five-Step Transformer - Trickle and Boost1 x DEF-140T Inlet Guard for the CBT-100N1 x ERR 31/1 Centrifugal inline fan1 x CBM Low Pressure Centrifugal Fan - CBM 10/10 4 Pole 550watt CVR2 x Mini Diffuser - 100mm1 x Speed Controller - REB11 x Single phase speed controller by auto-transformer - RMB 10.0 Amp1 x Skyflow SSR Horizontal Roof Cowl SSR31/35B1 x Speed Controller - REB101 x KKS 100 silencer-section - For use with the MUB 100 size Fans.1 x Transformer Speed Control - RTRE- 7.0Amp2 x MTS10- extractor fan 3 step switch1 x CBM 9-9 550w 4P VR (Open Motor)1 x Speed Controller - REB81 x Transformer (silent) speed controller - RE 1.5 Amp1 x Speed Controller - REB51 x CS2 Current Switch2 x Silent 100 Window Kit - windowS1 x CBS-60 Outlet Flange for CSB/CBT-601 x ELM 18 EX Flexible Cuff for ERM 181 x CBA-60 Inlet Flange for CBT-601 x DDMP 10-08 3F 2210W M6A4 DG01 x Quietflow SQS100-1ECL - Centrifugal Box Fan1 x Single Deflection Grille 400mm with OBD damper1 x 204x60mm Insulated Rectangular Vertical 45° Bend1 x Vent Axia ACM 125 T (Timer Model) inline mixed flow duct fan1 x REU 7amp Speed control - Two Speed Five-Step Transformer - Trickle and Boost1 x 220x90mm Insulated Rectangular Vertical 45° Bend1 x 220x90mm Insulated Rectangular Horizontal 45° Bend1 x 220x90mm Insulated Rectangular Vertical 90° Bend1 x Speed Controller - REB2.5-N1 x AXC TP - 100mm Plastic Centrifugal Inline Fan1 x CBT-100N Centrifugal
BD9/9 centrifugal M4 0.35Kw
BD9/9 centrifugal M4 0.35Kw
£ 399.00 now £ 350.00
Reviews
TD-SILENT 350/125
TD-SILENT 350/125
£ 178.68

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