• 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

2 x KMBI 315 Connector rectangular/circular to install on the discharge of CMT1 x Elta Variable Speed Drive IP66 - 2.2KW1 x FU 15 40 Frequency Inverter1 x FRQ-10A V2 Inverter Speed controller1 x FRQ5-4A V2 Inverter Speed Controller1 x FU 075 52 Frequency Inverter (IP20)1 x Frequency converter FU 075 14 - IP661 x Frequency converter RUCK - FU 075 201 x Elta Variable Speed Drive IP66 - 1.5KW1 x FRQ5-10A Inverter Speed controller1 x FU 15 16 Frequency Inverter1 x Elta Variable Speed Drive IP66 - 5.5KW1 x Elta Variable Speed Drive IP66 - 2.2KW (1ph to 3ph)1 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 ELTA - Single Phase Transformer 2amps1 x NKS-D swirl diffuser v-300 x 300mm1 x Circular Ceiling Diffuser - TST 1251 x PCA Diffuser - PCA-3154 x EC6H - Reversible Group Fan Electronic Controller1 x Circular Ceiling Diffuser - TST 1001 x Circular Ceiling Diffuser - TST 2001 x Curved Blade Grille 600x600 (2way blow)1 x Round ceiling diffuser 400mm3 x Elta 3 Amp Electronic single phase speed controller with TK1 x JSR 200 Painted RAL50183 x Elta 6 Amp Electronic single phase speed controller with TK1 x EFSC-3N- Single Phase Speed Control1 x ELTA - Single Phase Transformer 12amps1 x Balance S Diffuser - NO RING - 100mm1 x AIRVENT speed control - AIR4019611 x Round ceiling diffuser 200mm1 x ELTA - Single Phase Transformer 4amps1 x Round ceiling diffuser 300mm1 x EFSC-6N- Single Phase Speed Control1 x ELTA - Single Phase Transformer 10amps3 x Remote Timer Control - 13511 x Run On Timer - 5s - 4hrs - RT5A3 x Push Timer Switch - ZA41 x Time Delay Unit - DT20B1 x 7 Day Programmable TIMECLOCK1 x TTC-2000 Three phase electric heater controller1 x ACO8AC/EC AutoChangeover panel1 x ACOAS/ AC/EC Auto Changeover 8Amp1 x CONTROL ECOWATT - Basic1 x EC-Vent control board1 x ACO 149-ACO1/EDV1 x Helios TSD 3.0 Transformer Speed Control (400v)1 x FU 22 25 Frequency Inverter3 x Electronic extractor fan speed controller - FSC 1.51 x Balance S Diffuser - NO RING - 125mm1 x Circular Ceiling Diffuser - TST 1604 x Single phase speed controller by auto-transformer - RMB 1.5 Amp3 x Multi Input Run On Timer - 0 - 20min - CFCU2 x Envirovent Silent MV160/100T Mixvent - Timer Model - 100mm - (5 year warranty)4 x MWS 1.5 – Transformer Controller With Motor Protection2 x Vent Axia T-Series Controller3 x Systemair Save Connect 2.0 Internet Module1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 6301 x EC-Vent Room Unit1 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 EM30-24 Control Panel Commissioning Service3 x Speed Controller - REB51 x Easy-fix termination kit - High Rise Ventilator - EFT4 x Vent Axia ACM 125 T (Timer Model) inline mixed flow duct fan1 x Elta Variable Speed Drive IP66 - 4.0KW3 x Remote controller FLEX - for VEKO INT1 x ELTA - Three Phase Transformer 10amps1 x Helios - FIUK-11KW 24.0A - FREQUENCY INVERTER1 x FU 075 04 Frequency Inverter (IP20)2 x HCFC 1.7 - Reversible Speed Controller for HCF sweep fans2 x Vent Axia ACM 150 inline mixed flow duct fan1 x Elta 3 Amp Electronic single phase speed controller.3 x Transformer 5 Speed Controller - ATC1-12TK1 x Elta Variable Speed Drive IP66 - 0.37KW (1ph to 3ph)1 x Elta 6 Amp Electronic single phase speed controller.1 x Round ceiling diffuser 250mm1 x PCA Diffuser - PCA-2503 x Three Phase Transformer controllers - RMT 1.5 Amp2 x Vent Axia ACM 100 inline mixed flow duct fan5 x Vent Axia ACM 125 inline mixed flow duct fan4 x COM-34 x Isolator Switch - ISOSW2 x MWS 3 – Transformer Controller With Motor Protection1 x TG-K Duct temperature sensor2 x Helios HQW-200/2 - IP551 x Elta ACO Panel 149-ACO14E1 x Envirovent G4 Filter - SL-G4/F71 x EM30-24 Electro-Mechanical Control Panel2 x Isolator Switch - EFF-ISO2 x Envirovent 4 Way Remote Control Switch - SWHBKRF-45 x Vent Axia ACM 100 T (Timer Model) inline mixed flow duct fan1 x ELTA - Single Phase Transformer 16amps1 x ELTA - Single Phase Transformer 8amps3 x Helios TSW 7.5 Amp Transformer speed controller3 x Helios TSW 3 Amp Transformer speed controller2 x Transformer 5 Speed Controller - ATC1-8TK2 x Transformer 5 Speed Controller - ATC1-10TK2 x Helios TSW MCB Amp Transformer speed controller2 x Vent Axia ACM 200 inline mixed flow duct fan1 x MV-B Dual Switch for use with Helios HQW plate fans,1 x CS2 Current Switch2 x BEAS-control module3 x Single phase speed controller by auto-transformer - RMB 8.0 Amp2 x Two Speed Switch - REGUL-21 x TG-K3/NTC10-01 - Duct temperature sensor4 x WS - Reversing Switch from Helios Fans1 x REE-1 Electronic Speed Controller3 x Airvent ceiling fan controller4 x Transformer (silent) speed controller - RE 3.0 Amp1 x TG-R room temperature sensor2 x Skyflow SSR Horizontal Roof Cowl SSR31/35BS1 x Elta Variable Speed Drive IP66 - 0.75KW1 x REB-CVF 0-10v Controller1 x Quietflow SQS400-1ECL - Centrifugal Box Fan3 x Temperature Fan Speed Controller - ATCP4-WMS5 x Transformer speed controller - ATC1 - 1.5 Amps2 x Single phase speed controller by auto-transformer - RMB 3.5 Amp1 x KMBI 180 Connector rectangular/circular to install on the discharge of CMT1 x Transformer 5 Speed Controller - ATC1-4TK3 x Helios TSW 1.5 Amp Transformer speed controller1 x KMBI 225 Connector rectangular/circular to install on the discharge of CMT1 x DEF-140T Inlet Guard for the CBT-100N1 x Transformer 5 Speed Controller - ATC1-2TK1 x S&P MULTI-REG EC FAN CONTROLLER / INTERFACE1 x Helios TSW 0.3Amp Compact Transformer speed controller1 x CPTA-S PIR SENSOR Volt Free Contacts - Surface Mounted2 x Helios HQW-630/4 - IP552 x Helios HQW-200/4 - IP551 x Multiflow SMB550/4-1AC1 x RDS 7 Helios Transformer Controller With Motor Protection
Reviews
Duct Mounted Inline Filter - EU4
Duct Mounted Inline Filter - EU4
£ 44.99

Well made and robust, but it was not use for my application ...