• Model:R-DK4(EX)

ATEX rated 3-phase Speed Control - R-DK4 KT (EX)

£ 838.85 (excl. VAT)

£ 1,006.62 (inc. VAT)

Manual five-step transformer (with motor protection) for RVK 315Y4, KTEX, DKEX and DVEX fans.

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 thermistor motor protection triggs.
The unit is reset by turning the knob to 0 for 1 minute. Input terminals for room thermostat RT cut supply voltage to the fan when the circuit is broken.

NB. The transformer can not be placed in the EX zone.
1 x FU 15 40 Frequency Inverter1 x Helios TSD 3.0 Transformer Speed Control (400v)1 x Elta Variable Speed Drive IP66 - 7.5KW1 x Elta Variable Speed Drive IP66 - 2.2KW1 x Frequency converter FU 075 14 - IP661 x Elta Variable Speed Drive IP66 - 0.75KW1 x FU 22 25 Frequency Inverter1 x FU 075 52 Frequency Inverter (IP20)1 x FRQ5-4A V2 Inverter Speed Controller1 x Helios TSD 5.5 Transformer Speed Control (400v)1 x FRQ-10A V2 Inverter Speed controller1 x Elta Variable Speed Drive IP66 - 2.2KW (1ph to 3ph)1 x ATEX rated 3-phase Speed Control - R-DK4 KT (EX)1 x FU 15 16 Frequency Inverter1 x Elta Variable Speed Drive IP66 - 5.5KW1 x Elta Variable Speed Drive IP66 - 1.5KW1 x Frequency converter RUCK - FU 075 201 x Elta Variable Speed Drive IP66 - 4.0KW1 x Helios - FIUK-11KW 24.0A - FREQUENCY INVERTER1 x FU 075 04 Frequency Inverter (IP20)1 x Frequency converter RUCK - FU 075 211 x Frequency converter RUCK - FU 075 381 x ELTA - Three Phase Transformer 10amps1 x Elta 10 Amp Electronic single phase speed controller.1 x ELTA - Three Phase Transformer 3amps1 x NKS-D swirl diffuser v-300 x 300mm1 x ELTA - Single Phase Transformer 2amps1 x Circular Ceiling Diffuser - TST 1251 x Circular Ceiling Diffuser - TST 1001 x PCA Diffuser - PCA-3151 x Balance S Diffuser - NO RING - 125mm1 x Circular Ceiling Diffuser - TST 2001 x Electronic extractor fan speed controller - FSC 1.51 x EC6H - Reversible Group Fan Electronic Controller1 x Round ceiling diffuser 400mm1 x Circular Ceiling Diffuser - TST 1601 x Versio Square Ceiling Diffusers - RS141 x JSR 200 Painted RAL50181 x Elta 2 Amp Electronic single phase speed controller.1 x Elta 6 Amp Electronic single phase speed controller with TK1 x ELTA - Single Phase Transformer 8amps1 x EFSC-3N- Single Phase Speed Control1 x ELTA - Single Phase Transformer 16amps1 x Round ceiling diffuser 300mm1 x ELTA - Single Phase Transformer 12amps1 x Round ceiling diffuser 200mm1 x ELTA - Single Phase Transformer 4amps1 x COM-31 x AIRVENT speed control - AIR4019611 x Round ceiling diffuser 250mm1 x Elta Variable Speed Drive IP66 - 0.37KW (1ph to 3ph)1 x PCA Diffuser - PCA-2501 x EFSC-6N- Single Phase Speed Control1 x Elta 6 Amp Electronic single phase speed controller.1 x Elta Variable Speed Drive IP66 - 0.75KW (1ph to 3ph)1 x ELTA - Single Phase Transformer 10amps1 x Elta Variable Speed Drive IP66 - 1.5KW (1ph to 3ph)1 x Run On Timer - 5s - 4hrs - RT5A1 x Push Timer Switch - ZA41 x ELTA 49S-A1729 over run timer1 x Multi Input Run On Timer - 0 - 20min - CFCU1 x Time Delay Unit - DT20B1 x 7 Day Programmable TIMECLOCK1 x TTC-2000 Three phase electric heater controller2 x ACO8AC/EC AutoChangeover panel1 x Speed Controller - REB51 x Elta ACO Panel 149-ACO14E1 x CONTROL ECOWATT - Basic1 x EC-Vent control board1 x EM30-24 Electro-Mechanical Control Panel1 x ACO 149-ACO1/EDV1 x Three Phase 3 step - 10amp Transformer controller for use with the HV Wall Mounted fans.1 x EM10-24v Control Panel for FSD-C dampers1 x EC-Vent Room Unit1 x Elta ACO Panel 149-ACO18B1 x U-EK plastic housing IP65 - for use with the U-EK230E Motor Protection1 x Systemair Save Connect 2.0 Internet Module1 x EM30-24 Control Panel Commissioning Service1 x CBM 9-9 550w 4P VR (Open Motor)2 x CBT-100N Centrifugal1 x CBM Low Pressure Centrifugal Fan - CBM 9/7 4 Pole 373watt CVR1 x CBM Low Pressure Centrifugal Fan - CBM 10/10 4 Pole 550watt VR1 x CBT-80N Centrifugal1 x CBB-60N Centrifugal
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