KTEX50-25-4(230V/3~) (ATEX)
00.10.20.30.40.5m³/s0100200300Pa55V85V110V140V230V0.26295
Advanced calculation

KTEX Rectangular Duct Fans

Reliable inline fan for hazardous professional environments

  • ATEX certified according to ATEX 2014/34/EU

  • Suitable for high-risk environments

  • Swing out lid for easy maintenance

KTEX 50-25-4(230V/3~) (ATEX)#19403
Frequency: 50 Hz
£ 945.92excl. tax
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Designed for demanding environments

KTEX series of explosion-proof inline fans are designed for potentially hazardous premises like battery charging rooms, fume cupboards or other high-risk environments.

High performance

The KTEX fans combine a compact streamlined design with a high-performance forward curved radial impeller paired with reliable ATEX-rated AC motors.

Flexible installation

KTEX fans can be installed in any position, in rectangular duct air extract systems which makes them easy to fit in all different applications.

Explosion-Proof

KTEX series is classified as II 2 G Ex eb h IIB+H₂ T3 Gb.

Intended to use in explosion zone 1 and 2 for extracting gases and mixes of groups IIA, IIB and also hydrogen (H₂) with temperature classes Т1, Т2 and Т3. Complies with EN 60079-7:2015, EN 14986:2007, and EN 60079-0:2012.

Tech specs

Features

Casing

Casing made of galvanised sheet steel, corrosion class C3 with a copper inlet cone. The motor of the unit is mounted on swing-out lid to simplify service and maintenance. KTEX fans are equipped with connection cable to connect to the ATEX rated external connection box (separate accessory) for wiring onsite.

Impeller

KTEX fans use single inlet radial impellers with forward-curved blades. Made of lightweight, galvanised sheet steel. The impellers are dynamically balanced and paired with corresponding external rotor motors.

Motor

KTEX fans are equipped with ATEX certified, voltage controllable AC external rotor motors supported by long-life ball bearings.

Motor protection

KTEX fans have integrated PTC (Positive Temperature Coefficient) protective circuits with external leads for connection to a motor protection device (separate accessory). We recommend to use UEK230E motor protection, certified according to ATEX directive 2014/34/EU.

Control

Motors of KTEX fans can be controlled by a 5-step speed regulator as separate accessory. Speed regulation can be combined with timer, thermostat, hygrostat, etc. by using wide range of electrical accessories.

Mounting

KTEX fans can be installed indoor in any position. To avoid vibration transfer to the duct system we recommend to install flexible connections (accessory) .

Technical Data

Article name
KTEX 50-25-4(230V/3~) (ATEX)
Article number
#19403
230V 3~ 50Hz
Nominal data
Voltage (nominal)230V
Frequency50Hz
Phases3~
Input power506W
Input power kW0.506kW
Input current1.54A
Impeller speed1,300rpm
Air flowmax 0.504m³/s
Mininum static back pressure110Pa
Temperature of transported airmax 40°C
Max temperature of transported air, when speed controlled40°C
Sound data
Sound pressure level at 3m (20m² Sabin)50dB(A)
Protection/Classification
Enclosure class, motorIP44
Insulation classF
Explosion proof markingEx eb h IIB + H2 T3 Gb
CertificatePresafe 17ATEX9970X
Data according to ErP
ErP readyNot ErP relevant
Ambient and duct temperature
Ambient and duct temperature-20 to 40°C
Dimensions and weights
Duct dimension, inlet (height x width)250 x 500mm
Duct dimension, outlet (height x width)250 x 500mm
Weight18.2kg
Others
Duct connection typeRectangular
Motor typeAC

Performance

Dimensions

KTEX #19403, Dimensions
 
H* = Dimensions from the engine bolts
I** = Dimension with fully open hatch.
          
ABCDEFGH*I**
KTEX 50-25
49824827052054029053234,5610
KTEX 50-30
49829832052054034056234,5695
KTEX 60-30
59829832062064034064252715
KTEX 60-35
59834837062064039071754,5805
KTEX 70-40
69839842072074044078750900

Specification

Circular duct fan for easy and direct installation in ducts. Galvanized steel sheet housing. Copper inlet cone. Service cover. The fan unit is mounted on the service cover for easy cleaning and maintenance. Free-running, forward curved circular impeller made of galvanized steel sheet. Impeller acc. to VDI 2060, balancing quality G 6.3, dynamically balanced in two planes. Explosion proof, voltage controllable external rotor motor. (IP44), maintenance-free, the motor is placed inside the air flow for cooling. PTC with leads to a motor protection device (e.g. Systemair U-EK 230E-IP54). Speed-controlled via a 5-step transformer. Supply cable, led out. For indoor installation. Installation in any mounting position.Suitable to transport explosive atmospheres. Tested acc. to ATEX Directive 2014/34/EU.Explosion proof versions comply with EN 60079-7:2015, EN 14986:2007, EN 60079-0:2012. 

Accessories

U-EK230E Motor protection
#30199 · Thermistor Motor protection ATEX approved
£ 137.76excl. tax
FFK 50-25 Filter cassette rect
#1752 · Filter cassette 500x250 mm, rectangular
£ 161.22excl. tax
LDR 50-25 Silencer
#5070 · Rectangular, for air handling units
£ 258.19excl. tax
DS-EX 50-25 Flex. connection
#4116 · for air handling units
£ 122.30excl. tax