• Model:RTRD-7.0

RTRD - Three Phase Speed Controller - 7 Amp

£ 637.99 (excl. VAT)

£ 765.59 (inc. VAT)


Manual five-step transformer (with motor protection) - RTRD - Three Phase Speed Controller - 7 Amp

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 knob on the front of the unit.

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 knob to 0 for 10 seconds, after which the unit restarts.

Input terminals for room thermostat RT and frost protection thermostat FS cut supply voltage to the fan when the circuit is broken. When the frost protection thermostat FS breaks the circuit, it is reset in the same way as when the TK is triggered. Terminals are linked before delivery. The indicator lamp on the front shows that 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 knob is in position 0, or when the TK or RT input is open. Supply voltage: 400V 50/60Hz.
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RTRD 7 Speed Controller

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80mm PVC flexible ducting1 x Manrose 150mm - XF150BP1 x Manrose 150mm - XF150BHP1 x ME04F063LC1AF1 x D2E146-HT67-021 x International Shipping Surcharge1 x AW Sileo EC Plate Axial Fan - Three Phase - 1000mm1 x Control board kit Smarty 4X P 1.1 F2 Fan 230V1 x AL 315 EC 01 AXIALINE - High Performance Long Cased Axial Fan1 x Small Centrifugal Fans CBM/4-133/190 70w1 x CTVT/4-400 High Temp Roof Fan - 51369260001 x Manrose XF100HTLVT- Clearance1 x S&P RF4C-160/062 K040 SF-1744 (230V50Hz) VE1 x HQS Bathroom Axial Flow Fan - 125mm1 x Anti Vibration Mounts - Large - Pack of 4 - AVM11 x CAB-355 ECOWATT Energy Efficient Acoustic Box Fan1 x Economy Airvent 100mm Fan with Timer & Shutter1 x HIMF - Mixed Flow Fan 100mm Inline Fan2 x EBM-Papst D2E097-BK76-98 Double inlet1 x AL 500 EC 01 AXIALINE - High Performance Long Cased Axial Fan1 x Capacitor 2uf for use with the EBM A4E range1 x CRBB/3-160/052M EC 1H0 MP - Radial Impeller - 160mm1 x CAB-400 ECOWATT Energy Efficient Acoustic Box Fan1 x LF-ME04F071LC3AC1 x Fresh Air control carbon filter - 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IP562 x KMBI 250 Connector rectangular/circular to install on the discharge of CMT2 x TEM 075 - 5 Speed Transformer Speed Control2 x CMT-2 225/090 1.1KW - Single inlet centrifugal fan direct driven1 x Skyflow SSR Horizontal Roof Cowl SSR80B2 x SG-200 Fan Guard for the HQW 2002 x Speed controller with Reverse - REB-1R4 x KMBI 225 Connector rectangular/circular to install on the discharge of CMT2 x Transformer Speed Control - RTRE- 12.0Amp1 x TG-K3/NTC10-01 - Duct temperature sensor1 x Isolator Switch - EFF-ISO2 x DDMP 09-09 3F 2130W M6A4 DG01 x REB-CVF 0-10v Controller1 x TG-K Duct temperature sensor1 x ELM 25 EX Flexible Cuff for ERM 251 x Helios HQW-315/4 - IP551 x VTR 300 STD Filter Kit1 x KBA- Inlet Mounting 3552 x Helios TSW MCB Amp Transformer speed controller1 x Skyflow SSR Horizontal Roof Cowl SSR31/35BS1 x Silent 100 Window Kit - windowS1 x CPTA-E Flush mounted PIR sensor with timer1 x Push Timer Switch - ZA41 x Temperature Fan Speed Controller - ATCP4-FLS1 x HCFC 1.7 - Reversible Speed Controller for HCF sweep fans
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