• Model:RTRD-4.0

RTRD - Three Phase Speed Controller - 4 Amp

£ 473.49 (excl. VAT)

£ 568.19 (inc. VAT)


Manual five-step transformer (with motor protection) - RTRD - Three Phase Speed Controller - 4 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.
PDF Files


RTRD 4 Speed Controller

1 x Elta Variable Speed Drive IP66 - 2.2KW1 x Helios TSD 3.0 Transformer Speed Control (400v)1 x FU 22 25 Frequency Inverter1 x Frequency converter FU 075 14 - IP661 x Elta Variable Speed Drive IP66 - 4.0KW1 x Elta Variable Speed Drive IP66 - 2.2KW (1ph to 3ph)1 x ELTA - Three Phase Transformer 10amps3 x ATEX rated 3-phase Speed Control - R-DK4 KT (EX)1 x JSR 200 Painted RAL50181 x PCA Diffuser - PCA-2501 x Round ceiling diffuser 250mm1 x Elta Variable Speed Drive IP66 - 1.5KW1 x FRQ5-10A Inverter Speed controller1 x ELTA - Three Phase Transformer 3amps1 x Helios - FIUK-11KW 24.0A - FREQUENCY INVERTER1 x NKS-D swirl diffuser v-300 x 300mm1 x Multi Input Run On Timer - 0 - 20min - CFCU1 x FU 15 40 Frequency Inverter2 x Elta Variable Speed Drive IP66 - 7.5KW2 x Helios TSD 5.5 Transformer Speed Control (400v)2 x FU 075 52 Frequency Inverter (IP20)2 x Elta Variable Speed Drive IP66 - 0.75KW2 x FRQ5-4A V2 Inverter Speed Controller1 x Frequency converter RUCK - FU 075 201 x FU 075 04 Frequency Inverter (IP20)1 x Frequency converter RUCK - FU 075 212 x FU 22 04 Frequency Inverter1 x Balance S Diffuser - NO RING - 125mm1 x Circular Ceiling Diffuser - TST 1251 x Circular Ceiling Diffuser - TST 1001 x PCA Diffuser - PCA-3151 x Curved Blade Grille 600x600 (2way blow)1 x Round ceiling diffuser 400mm1 x Circular Ceiling Diffuser - TST 1601 x Versio Square Ceiling Diffusers - RS142 x Helios VDS-7 Three Phase Transformer 5-Step1 x Round ceiling diffuser 200mm1 x Balance S Diffuser - NO RING - 100mm1 x Round ceiling diffuser 300mm1 x Round ceiling diffuser 350mm2 x Push Timer Switch - ZA41 x Run On Timer - 5s - 4hrs - RT5A1 x Remote Timer Control - 13511 x Envirovent 4 Way Remote Control Switch - SWHBKRF-41 x Vent Axia ACM 150 inline mixed flow duct fan1 x FU 15 16 Frequency Inverter
Reviews
TD-SILENT 350/125
TD-SILENT 350/125
£ 178.68

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