CK 250 C | H. Östberg

CK 250 C Updated: 2025-10-02

7000021 -

CK 250 C man tc

7000065 -

CK 250 C aut tc

Duct fan with circular connections.
Proven performance and reliability.
Compact with high capacity and efficiency.
Low sound levels.
Impeller with backward curved blades.
The external rotor motor has maintenance-free sealed ball-bearings and is very energy efficient.
For speed control a transformer or electronic speed controller can be connected.
Integrated motor protection.
Junction box has enclosure class IP 54.
Fan housing is manufactured from galvanized sheet steel.
The fan is intended to be installed in a duct system.
A duct connected fan can be installed outside or in damp environments.
Easy installation in any position.

Generating diagrams...

Variable control

User input

Air Flow (l/s)

External static pressure (Pa)

Data

Air Flow (l/s)

External static pressure (Pa)

Power (W)

Speed (r.p.m.)

Current (A)

Voltage (V)

230

Efficiency (%)

SFPv (kW/m3/s)

Change the "User input" by dragging the point, or by entering new values.

Generating diagrams...

	CK 250 C man tc 7000021		CK 250 C aut tc 7000065
Parameter	Value	Unit	Value	Unit
Voltage	230	V	230	V
Phase	1	~	1	~
Frequency	50	Hz	50	Hz
Power	185	W	185	W
Current	0.81	A	0.81	A
Speed	2420	r.p.m.	2420	r.p.m.
Max. temperature of transported air	65	°C	65	°C
Max. temperature of transported air when speed controlled	65	°C	65	°C
Sound pressure level at 3 m	49	dB(A)	49	dB(A)
Weight	5.1	kg	5.1	kg
Enclosure class	44	IP	44	IP
Insulation class, motor	F		F
Capacitor	5	µF	5	µF
Duct connection	250	mm	250	mm
Max. flow @ 0Pa	311	l/s	311	l/s
Max. pressure	554	Pa	554	Pa
Voltage range	220-240	V	220-240	V