• Model:RTRDU2.0

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

£ 778.28 (excl. VAT)

£ 933.94 (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

1 x RUCK MTP 50, Potentiometer1 x AL 1120 Mounting Flange1 x TRA 1120-1250 - Crossbeam for AL 1120 & 1250 Fans1 x LCA403218 - Long Cased Axial Fan1 x Elta SLC500/4A-1AC - IP551 x AL 1120 D6 mounting Feet (Pair)1 x Male Ducting Connector - 1120mm1 x Stainless Steel Male Connector - 200mm1 x Stainless Steel Duct Suspension Rings - SUR3151 x Elta Variable Speed Drive IP66 - 2.2KW1 x FU 15 40 Frequency Inverter1 x Elta Variable Speed Drive IP66 - 7.5KW1 x FRQ-10A V2 Inverter Speed controller1 x FRQ5-4A V2 Inverter Speed Controller1 x FU 075 52 Frequency Inverter (IP20)1 x Elta Variable Speed Drive IP66 - 4.0KW1 x Frequency converter FU 075 14 - IP661 x FU 22 25 Frequency Inverter1 x Elta Variable Speed Drive IP66 - 0.75KW1 x FRQ5-10A Inverter Speed controller1 x Elta Variable Speed Drive IP66 - 1.5KW1 x Frequency converter RUCK - FU 075 201 x FU 15 16 Frequency Inverter1 x Elta Variable Speed Drive IP66 - 5.5KW1 x ELTA - Three Phase Transformer 3amps1 x Elta Variable Speed Drive IP66 - 2.2KW (1ph to 3ph)1 x Elta 10 Amp Electronic single phase speed controller.1 x Frequency converter RUCK - FU 075 211 x FU 075 04 Frequency Inverter (IP20)1 x Helios - FIUK-11KW 24.0A - FREQUENCY INVERTER1 x ELTA - Three Phase Transformer 10amps1 x FU 22 04 Frequency Inverter1 x ELTA - Single Phase Transformer 2amps1 x NKS-D swirl diffuser v-300 x 300mm1 x Electronic extractor fan speed controller - FSC 1.51 x Balance S Diffuser - NO RING - 125mm1 x EC6H - Reversible Group Fan Electronic Controller1 x Circular Ceiling Diffuser - TST 1251 x PCA Diffuser - PCA-3151 x Elta 2 Amp Electronic single phase speed controller.1 x Elta 3 Amp Electronic single phase speed controller with TK1 x Circular Ceiling Diffuser - TST 1001 x ELTA - Single Phase Transformer 16amps1 x Curved Blade Grille 600x600 (2way blow)1 x ELTA - Single Phase Transformer 8amps1 x Airvent ceiling fan controller1 x 5-Speed Controller for use with Elta SAX Classic Fans1 x Elta 3 Amp Electronic single phase speed controller.1 x EFSC-3N- Single Phase Speed Control1 x Elta 6 Amp Electronic single phase speed controller with TK1 x Circular Ceiling Diffuser - TST 2001 x JSR 200 Painted RAL50181 x Round ceiling diffuser 400mm1 x ELTA - Single Phase Transformer 12amps1 x Circular Ceiling Diffuser - TST 1601 x AIRVENT speed control - AIR4019611 x ELTA - Single Phase Transformer 4amps1 x COM-31 x EFSC-6N- Single Phase Speed Control1 x Balance S Diffuser - NO RING - 100mm1 x Elta 6 Amp Electronic single phase speed controller.1 x Round ceiling diffuser 200mm1 x PCA Diffuser - PCA-2501 x ELTA - Single Phase Transformer 10amps1 x TG-K3/NTC10-01 - Duct temperature sensor1 x Round ceiling diffuser 250mm1 x Round ceiling diffuser 350mm1 x Multi Input Run On Timer - 0 - 20min - CFCU1 x Vent Axia ACM 100 T (Timer Model) inline mixed flow duct fan1 x HCFC 1.7 - Reversible Speed Controller for HCF sweep fans1 x Vent Axia ACM 150 inline mixed flow duct fan1 x Helios TSW 7.5 Amp Transformer speed controller1 x Helios TSW 0.3Amp Compact Transformer speed controller2 x Remote controller FLEX - for VEKO INT1 x Transformer 5 Speed Controller - ATC1-10TK1 x Transformer 5 Speed Controller - ATC1-4TK1 x Transformer 5 Speed Controller - ATC1-8TK1 x Push Timer Switch - ZA4
Reviews
DAOSL Back Draft Damper
DAOSL Back Draft Damper
£ 11.49

Look good, works well, except the shaft of the lanellae cuts...