ERAD & ERAE Forward Curved Centrifugal Fans

ERAD & ERAE Forward Curved Centrifugal Fans

Available with 1~, 3~ and EC Motors

Manufacturing Features:
Forward curved centrifugal fan with single inlet.

Casing made of galvanised sheet steel.
Asynchronous external rotor motor.
Flow rates up to 15,000 m³/h.
Size: 180 - 400 mm (impeller diameter).
Feet can be offset by 90°.
Protection class IP54.
Thermal class F.
Connection cable on side.
Motor protection by thermal contacts.
Speed is variable using auto transformers.

Single inlet forward curved centrifugal fans

Designed for Clean Air Movement and Air Conditioning

The ERAD and ERAE series of forward curved fans manufactured by Rosenberg, are specifically designed for clean air transport and air conditioning. Typical applications include air handling units, compressors and industrial Buildings.

Available in Impeller Sizes 180mm to 400mm

The impellers available from size 180mm to 400mm are made of galvanised sheet steel and mounted directly to the rotor of the external rotor motor. Impellers are balanced dynamically on two levels with the rotor according to quality level G 2,5 / G 6,3 as per DIN ISO 21940-11.


ERAE: Single inlet forward curved fan,1~

ERAD: Single Inlet forward curved fan, 3~

EC version also available: ERAG Forward Curved Centrifugal Fan

Suitable Applications

•Air handling units
•Industrial buildings

Technical Data

The side parts and the spiral-shaped guide plate of the fans are connected with rivets. In the side panels, there are holes for the fixing of the feet, 
which can be implemented by 90°. The drive motors are fitted with an outgoing cable and the electrical connection is made via an IP44 terminal box which is supplied loose.

Fan Type Voltage
Power (kW)
Current (A)
Max Temp
IP Rating
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