EC Modular Plug Fans – Backward Curved Plug Fans

EC Modular Plug Fans – Backward Curved Plug Fans

Expertly designed and manufactured to the highest standards by The Rosenberg group in Germany, the GKHM range of modular EC plug fans, blend efficiency, performance and costs perfectly.

Our EC Modular Plug fans feature the Generation 3 EC motor to motorise lightweight and aerodynamically designed backward curved impellers. Each impeller is designed for superior noise attenuation, pressure and performance in line with the operating systems of a wide range of core industrial fan air movement applications.

Energy Efficient (CIE)

Rosenberg impellers are manufactured in house using state of the art materials. Each wheel produces class leading performance in a backward curved offering. Our reputable E-Wheel is efficiency optimised by using 7 profiled blades and a narrow diffuser to maximise static regain through the fan discharge.

Higher Performance (IE)

Our plug fans are geared for maximum performance and efficiency, to achieve this, the inlet conditions have been optimised by reducing the motor interaction with the airflow path as much as possible. This has resulted in increased airflow and pressure against our non-optimised solutions.

EC Generation 3 Motor (Gen3)

The Gen 3 motor from Rosenberg is 30% more powerful than the Gen 2 equivalent and allows for an input voltage of 200-480VAC, 50/60Hz in the same reference.

Low Cost & Low Noise

Competitively priced, our EC plug fans are a cost effective, low noise solution that are adopted by many UK manufacturers.

EC plug FansExternal rotor motors are contained within the depth of the fan impeller, thus saving the space normally occupied by a standard motor. They are located in the air stream, so temperature is limited, and are generally of protection class IP44, so the air needs to be clean and dry to avoid motor contamination. The range of backward curved impeller is available as a free running option or an EC modular plug fans configuration.

EC backward curved centrifugal fans develop pressure within the envelope of the impeller and do not, therefore, rely on a scroll housing for this purpose. They are relatively low cost and can be simply and cheaply housed. Air is drawn through a radius inlet ring, which minimises pressure losses and air leakage, and is discharged at 90° to the inlet axis. The impeller has a ‘non-overloading’ characteristic in that it draws maximum power near the centre of its pressure/volume flow curve.

Low-cost speed control is possible for EC fans by supply voltage variation, either by an electronic (triac) method or by a transformer.

Each backward curved plug fan is available in multiple fan configurations to suit the application. Contact us to discuss the right plug fan to achieve your required duty. 

EC Plug Fans Dual Voltage

E Wheel Motorised Impeller & Modular Plug Fan (1~ & 3~)

GKHM EWheel EC PLug FansSuitable for Low to Medium Pressure applications with high flow rates.

Low Noise 

High Efficiency

Material: Lightweight Fibre Reinforced ABS

GKHR (xxx) CIE – Motorised Impeller
GKHM (xxx) CIE – Fan Module / Plug Type

Learn more about the E-Wheel characteristics here

Fan Type
Voltage
(V)
Frequency
(Hz)
Input
Power (kW)
Rated
Current (A)
Speed
(rpm)
Max Temp
(°C)
IP Rating
(IP)
Sound
(dB)
Request a Quote
GKHR 315-CIE.088.4EA or
GKHM 315-CIE.088.4EA
230 50 / 60 0.5 2.8 2200 40 IP54 69
GKHR 355-CIE.112.4EA or
GKHM 355-CIE.112.4EA
230 50 / 60 0.5 2.7 1650 40 IP54 69
GKHR 355-CIE.112.5FA or
GKHM 355-CIE.112.5FA
230 50 / 60 1.12 5.0 2250 45 IP54 76
GKHR 355-CIE.112.5FA or
GKHM 355-CIE.112.5FA
400 50 / 60 1.70 2.8 2600 40 IP54 79
GKHR 400-CIE.125.4FF or
GKHM 400-CIE.125.4FF
230 50 / 60 0.5 2.8 1380 40 IP54 67
GKHR 400-CIE.125.5HF or
GKHM 400-CIE.125.5HF
400 50 / 60 1.60 2.5 2100 40 IP54 74
GKHR 400-CIE.125.5FA or
GKHM 400-CIE.125.5FA
230 50 / 60 1.16 5.2 1875 40 IP54 73
GKHR 450-CIE.136.5FA or
GKHM 450-CIE.136.5FA
230 50 / 60 1.15 5.1 1550 40 IP54 71
GKHR500-CIE.154.5HF or
GKHM500-CIE.154.5HF
230 50 / 60 1.15 5.1 1330 40 IP54 71
GKHR 450-CIE.136.5HF or
GKHM 450-CIE.136.5HF
400 50 / 60 1.65 2.7 1775 40 IP54 75
GKHR 450-CIE.135.6FF or
GKHM 450-CIE.135.6FF
400 50 / 60 3.50 5.1 2300 40 IP54 84
GKHR 450-CIE.135.6FF or
GKHM 450-CIE.135.6FF
400 50 / 60 1.50 2.4 1425 40 IP54 80
GKHR 500-CIE.154.6FF or
GKHM 500-CIE.154.6FF
400 50 / 60 2.90 4.4 1800 60 IP54 80
GKHR 560-CIE.175.6IF or
GKHM 560-CIE.175.6IF
400 50 / 60 3.26 5.0 1550 50 IP54 80

B Wheel Motorised Impeller & Modular Plug Fan (1~ & 3~)

B WheelDesigned for Medium to High Pressure Applications

Material: Aluminium impeller

Low Noise

GKHR (xxx) CIB – Motorised Impeller
GKHM (xxx) CIB – Fan Module / Plug Type

IP Rating: IP54

Fan Type
Article
Number
Voltage
(V)
Freq
(Hz)
Input
Power
(kW)
Rated
Current (A)
Fan Speed
(min-1)
Max Air
Temp (°C)
IP Rating
(IP)
GKHR
(kg)
GKHM
(kg)
Request a Quote
GKHR250-CIB.080.4EA IE or
GKHM250-CIB.080.4EA
N86-25300 or
N88-25300
1Ph 230V 50/60 0.48 2.8 2850 40/60 IP54 5.2 11
GKHR280-CIB.090.5FA IE or
GKHM280-CIB.090.5FA IE
N86-28303 or
N88-28303
1Ph 230V 50/60 1.1 6.3 3000 40/60 IP54 10 16
GKHR280-CIB.090.5FA or
GKHM280-CIB.090.5FA
N86-28301 or
N88-28301
3Ph 400V 50 / 60 1.6 2.5 3500 40/60 IP54 10 16
GKHR 315-CIB.100.4EA IE or
GKHM 315 CIB 100 4EA
1Ph 230V 50 / 60 0.43 2.5 1850 40/60 IP54 6 14
GKHR 315-CIB.100.5FA IE or
GKHM 315-CIB.100.5FA
N86-31801 or
N88-31801
1Ph 230V 50 / 60 1.0 6.2 2400 40/60 IP54 10.5 18.5
GKHR 315-CIB.100.5FA IE or
GKHM 315-CIB.100.5FA
N86-31804 or
N88-31804
3Ph 400V 50 / 60 1.6 2.6 2900 40/60 IP54 10.5 18.5
GKHR 355-CIB.112.6FF IE or
GKHM 355-CIB.112.6FF
N86-35801 or
N88-35801
3Ph 400V 50 / 60 3.3 4.8 3000 40/60 IP54 21 31
GKHR 400-CIB.125.6FF IE or
GKHM 400-CIB.125.6FF IE
N86-40300 or
N88-40300
3Ph 400V 50 / 60 3.5 5.3 2600 40/60 IP54 21.5 38
GKHR 450 CIB.140.6IF or
GKHM 450 CIB.140.6IF
N86-45300 or
N88-45300
3Ph 230V 50 / 60 3.6 5.2 2150 40/60 IP54 27 47
GKHR 450 CIB.140.6IF or
GKHM 450 CIB.140.6IF
N88-45350 3Ph 400V 50 3.3 8.4 2050 40/60 IP54
GKHR 500-CIB.160.6IF IE or
GKHM 500-CIB.160.6IF IE
N86-50300 or
N88-50300
3Ph 400V 50 / 60 3.6 5.3 1750 40/60 IP54 28 55
GKHR560-CIB.180.6IF IE or
GKHM560-CIB.180.6IF IE
N86-56300 or
N-8856300
3Ph 400V 50 / 60 3.3 4.8 1450 40/60 IP54 30 62
GKHR 630-CIB.200.6NA IE or
GKHM 630-CIB.200.6NA IE
N86-63302 or
N88-63302
3Ph 230V 50 / 60 3.1 7.7 1140 40/60 IP54 37 74
GKHR 630-CIB.200.6NA IE or
GKHM 630-CIB.200.6NA IE
N86-63301 or
N88-63301
3Ph 400V 50 / 60 3.3 5.0 1181 40/60 IP54 37 74
GHKB 630-CEB.200.8LA N88-63350 3Ph 400V 50 6.6 9.8 1500 40/60 IP54
GKHB 710 CEB 200 8LA N88-71352 3Ph 400V 50 6.9 11.0 1280 40/60 IP54

G Wheel Modular Plug Fans (3~)

GKHM G WheelHigh Pressure, Constant Volume Applications

Low Noise

High Efficiency

Material: Metal Impeller with Quartz Grey Coating

Ideal for cleanroom and containment applications, the 6 profiled blades of the pressure optimised sheet steel metal impeller G-Wheel
is attenuated for low noise and benefits from an efficiency optimised diffuser wheel.

Sound ratings available on request. Suitable for mounting either horizontally or vertically.

GKHR (Impeller Diameter) CIG – Motorised Impeller
GKHM (Impeller Diameter) CIG – Fan Module / Plug Type

Fan Type
Voltage
(V)
Frequency
(Hz)
Input
Power (kW)
Rated
Current (A)
Speed
(rpm)
Max Temp
(°C)
IP Rating
(IP)
Request a Quote
GKHM 355-CIG.102.5HF IE Gen3 (IE5) 3~ 380-480 50 / 60 2.33 3.7 at 400V 3120 40 IP54
GKHM 400-CIG.114.6FF IE Gen3 (IE5) 3~ 380-480 50 / 60 4.48 7 at 400V 3170 40 IP54
GKHM 450-CIG.128.6IF IE Gen3 (IE4) 3~ 380-480 50 / 60 5.9 9.05 at 400V 2950 40 IP54
GKHM 500-CIG.143.6NA IE Gen3+ (IE4) 3~ 380-480 50 / 60 7.48 11.4 at 400V 2625 40 IP54
GKHM 560-CIG.160.6NA IE Gen3+ (IE4) 3~ 380-480 50 / 60 6.85 10.7 at 400V 2125 40 IP54
GKHM 630-CIG.180.6NA IE Gen3+ (IE4) 3~ 380-480 50 / 60 5.1 7.88 at 400V 1580 40 IP54

Products in this Range

B Wheel Motorised Impeller

Designed to increase energy efficiency by up to 6% and reduce noise by 3 decibels

E Wheel Motorised Impeller

Significantly increases energy efficiency and reduces operating noise levels

G Wheel Modular Plug Type

Pressure orientated and sound optimized modular to increase energy efficiency

RRE & RRM Backward Curved Centrifugal Fan

High performance motorised impeller and fan module with efficient EC motors

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Ecofit Ewheel – New EC Backward Curved Centrifugal Fan (19/02/2018)

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The Growth of EC (12/09/2018)

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