• 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

4 x Vent Axia ACM 125 inline mixed flow duct fan1 x Vent Axia ACM 150 inline mixed flow duct fan1 x Remote Timer Control - 13513 x Push Timer Switch - ZA42 x Three Phase Transformer controllers - RMT 1.5 Amp1 x Run On Timer - 5s - 4hrs - RT5A1 x Transformer 5 Speed Controller - ATC1-10TK1 x Transformer 5 Speed Controller - ATC1-4TK1 x Helios TSW 3 Amp Transformer speed controller1 x Transformer 5 Speed Controller - ATC1-8TK2 x CS2 Current Switch1 x Helios ZNE Electronic Fan Overrun Timer1 x Temperature Fan Speed Controller - ATCP4-WMS1 x Envirovent 4 Way Remote Control Switch - SWHBKRF-41 x Multi Input Run On Timer - 0 - 20min - CFCU1 x Time Delay Unit - DT20B1 x Helios TSW 1.5 Amp Transformer speed controller1 x Helios TSW MCB Amp Transformer speed controller1 x TTC-2000 Three phase electric heater controller1 x Helios TSW 0.3Amp Compact Transformer speed controller1 x MV-B Dual Switch for use with Helios HQW plate fans,1 x COM-32 x Single phase speed controller by auto-transformer - RMB 1.5 Amp3 x MWS 1.5 – Transformer Controller With Motor Protection1 x MWS 3 – Transformer Controller With Motor Protection1 x Elta ACO Panel 149-ACO14E1 x Systemair Save Connect 2.0 Internet Module1 x WS - Reversing Switch from Helios Fans1 x TG-R room temperature sensor1 x ACO 149-ACO1/EDV2 x Single phase speed controller by auto-transformer - RMB 8.0 Amp1 x EM30-24 Electro-Mechanical Control Panel1 x Helios PU10 Speed Potentiometer (Flush Mounted)1 x Elta Variable Speed Drive IP66 - 0.75KW1 x CBM Low Pressure Centrifugal Fan - CBM 10/10 4 Pole 550watt CVR1 x U-EK plastic housing IP65 - for use with the U-EK230E Motor Protection1 x Elta 6 Amp Electronic single phase speed controller with TK
BD7/7 centrifugal M4 0.13Kw
BD7/7 centrifugal M4 0.13Kw
£ 345.00 now £ 300.00
Reviews
EM 250-E2M 01- Etamaster-250
EM 250-E2M 01- Etamaster-250
£ 128.80

Really well made but comes with no speed controler? ?and can...