Speed-controllable
Integrated electronic motor protection
Safe and maintenance free operation
Energy-saving
Suitable for External Mounting as standard
Low noise level
Twin fan – Run & Standby

The KV DUO fans are driven by EC-external rotor motors. These are energy saving motors with high efficiency. The power electronics are integrated in the motor housing. All models have one potential-free terminal for error message. All motors are suitable to be used for 50/60Hz. The input voltage for single phase units can vary between 200 and 277V, for three phase units between 380 and 480V. Speed control by a 0-10V signal.

The fans are easy to connect to spiral ducts using FK mounting clamps.

The KV DUO models are manufactured from Aluzinc sheet steel with acoustic insulation and are suitable for external mounting on roofs. All models are equipped with backward curved centrifugal impellers wired out to an IP65 Terminal box.

Technical parameters

Norminal data
Voltage (Nominal)	230	V
Frequency	50	Hz
Phase(s)	1~
Input power	750	W
Input current	3.28	A
Impeller speed	2,084	r.p.m.
Air flow	max 1.248	m³/s
Temperature of transported air	max 60	°C
Max temperature of transported air, when speed controlled	60	°C

Sound data
Sound pressure level at 3m (20m² Sabin)	62	dB(A)

Protection/Classification
Enclosure class, motor	IP54
Insulation class	B

Data according to ErP
ErP ready	ErP 2016; ErP 2018

Dimensions and weights
Duct dimension; Circular, inlet	400	mm
Duct dimension; Circular, outlet	400	mm
Weight	76.4	kg

Others
Duct connection type	Circular
Motor type	EC

Manuals & Guides
Systemair KV DUO 400 EC Twin Fan 76834 datasheet