RKB 400x200 E1 | H. Östberg

RKB 400x200 E1 Updated: 2025-10-03

7470046 -

RKB 400x200 E1 man tc
Archived product

7470050 -

RKB 400x200 E1 aut tc

Duct fan with rectangular connections.
Proven performance and reliability.
High capacity and very good efficiency.
Operational in both 50 and 60 Hz.
Impeller with backward curved blades.
The external rotor motor has maintenance-free sealed ball-bearings.
Integrated motor protection.
Junction box has enclosure class IP 54.
For speed control a transformer or electric speed controller can be connected.
Fan housing is manufactured from galvanized sheet steel.
Swing-out design to simplify maintenance and cleaning of the impeller.
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.
This product cannot be speed controlled below 165 V.

Diagrams

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.

Sound data

Generating diagrams...

Technical Data

	RKB 400x200 E1 man tc 7470046 Archived product		RKB 400x200 E1 aut tc 7470050
Parameter	Value	Unit	Value	Unit
Voltage	230	V	230	V
Phase	1	~	1	~
Frequency	50	Hz	50	Hz
Optional frequency	60	Hz	60	Hz
Power	229	W	229	W
Current	1	A	1	A
Current when speed controlled	1.24	A	1.24	A
Speed	2760	r.p.m.	2760	r.p.m.
Max. temperature of transported air	70	°C	70	°C
Max. temperature of transported air when speed controlled	70	°C	70	°C
Sound pressure level at 3 m	59	dB(A)	59	dB(A)
Weight	11.1	kg	11.1	kg
Enclosure class	44	IP	44	IP
Insulation class, motor	F		F
Capacitor	6	µF	6	µF
Max. flow @ 0Pa	320	l/s	320	l/s
Max. pressure	665	Pa	665	Pa
Voltage range	220-240	V	220-240	V

Product information sheet

Parameter	Value	Unit
(a) Manufacturer	Östberg	-
(b) Model code	RKB 400x200 E1	-
(c) Declared type	NRVU / UVU	-
(d) Type of drive	Multi-speed drive	-
(e) Type of HRS	N/A	-
(f) Thermal efficiency	N/A	%
(g) Nominal flow rate	0.173	m³/s
(h) Effective power input	0.221	kW
(i) SFP int	N/A	W/(m³/s)
(j) Face velocity	3.1	m/s
(k) Nominal external pressure	436	Pa
(l) Internal pressure drop	N/A	Pa
(n) Static efficiency	44.8	%
(o) External (and internal) leakage rate	0.12	%
(p) Filter classification	N/A	-
(q) Visual filter warning	N/A	-
(r) Sound power level	66	dB LwA
(s) Disassembly instructions	www.ostberg.com	-

Wiring Diagram

Dimensions

Accessories

Mechanical accessories

Electrical accessories

Downloads

3D drawings

Diagrams

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.

Sound data

Generating diagrams...

Technical Data

	RKB 400x200 E1 aut tc 7470050 (50)/60Hz
Parameter	Value	Unit
Voltage	230	V
Phase	1	~
Frequency	60	Hz
Optional frequency	50	Hz
Power	345	W
Current	1.52	A
Speed	3000	r.p.m.
Max. temperature of transported air	60	°C
Max. temperature of transported air when speed controlled	60	°C
Sound pressure level at 3 m	59	dB(A)
Weight	11.1	kg
Enclosure class	44	IP
Insulation class, motor	F
Capacitor	3	µF
Max. flow @ 0Pa	419	l/s
Max. pressure	898	Pa
Voltage range	220-240	V

RKB 400x200 E1 Updated: 2025-10-03

Diagrams

Sound data

Technical Data

Product information sheet

Wiring Diagram

Dimensions

Accessories

Mechanical accessories

Mounting bracket Kit Universal

Flexible connection 400x200

Silencer LDR 400x200

Electrical accessories

Transformer controller VRTE 1

Transformer controller VRDE 1.5

Speed controller VRS 3

Downloads

Manuals

EU Declarations

Product Declarations

3D drawings

Diagrams

Sound data

Technical Data

Wiring Diagram

Dimensions

Accessories

Mechanical accessories

Mounting bracket Kit Universal

Flexible connection 400x200

Silencer LDR 400x200

Electrical accessories

Transformer controller VRTE 1

Transformer controller VRDE 1.5

Speed controller VRS 3

Downloads

Manuals

EU Declarations

Product Declarations

3D drawings

LOGIN

RKB 400x200 E1 Updated: 2025-10-03

Mechanical accessories

Mounting bracket Kit Universal

Flexible connection 400x200

Silencer LDR 400x200

Electrical accessories

Transformer controller VRTE 1

Transformer controller VRDE 1.5

Speed controller VRS 3

Manuals

EU Declarations

Product Declarations

3D drawings

Mechanical accessories

Mounting bracket Kit Universal

Flexible connection 400x200

Silencer LDR 400x200

Electrical accessories

Transformer controller VRTE 1

Transformer controller VRDE 1.5

Speed controller VRS 3

Manuals

EU Declarations

Product Declarations

3D drawings