RKB 300x150 C1 | H. Östberg

RKB 300x150 C1 Updated: 2025-10-03

7470006 -

RKB 300x150 C1 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.

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 300x150 C1 aut tc 7470006
Parameter	Value	Unit
Voltage	230	V
Phase	1	~
Frequency	50	Hz
Optional frequency	60	Hz
Power	64	W
Current	0.35	A
Speed	2460	r.p.m.
Max. temperature of transported air	70	°C
Max. temperature of transported air when speed controlled	70	°C
Sound pressure level at 3 m	52	dB(A)
Weight	6.0	kg
Enclosure class	44	IP
Insulation class, motor	F
Capacitor	2	µF
Max. flow @ 0Pa	150	l/s
Max. pressure	336	Pa
Voltage range	220-240	V

Product information sheet

Parameter	Value	Unit
(a) Manufacturer	Östberg	-
(b) Model code	RKB 300x150 C1	-
(c) Declared type	NRVU / UVU	-
(d) Type of drive	Variable speed drive	-
(e) Type of HRS	N/A	-
(f) Thermal efficiency	N/A	%
(g) Nominal flow rate	0.080	m³/s
(h) Effective power input	0.063	kW
(i) SFP int	N/A	W/(m³/s)
(j) Face velocity	2.5	m/s
(k) Nominal external pressure	203	Pa
(l) Internal pressure drop	N/A	Pa
(n) Static efficiency	20.8	%
(o) External (and internal) leakage rate	0.46	%
(p) Filter classification	N/A	-
(q) Visual filter warning	N/A	-
(r) Sound power level	57	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 300x150 C1 aut tc 7470006 (50)/60Hz
Parameter	Value	Unit
Voltage	230	V
Phase	1	~
Frequency	60	Hz
Optional frequency	50	Hz
Power	79	W
Current	0.34	A
Speed	2780	r.p.m.
Max. temperature of transported air	70	°C
Max. temperature of transported air when speed controlled	70	°C
Sound pressure level at 3 m	50	dB(A)
Weight	6.0	kg
Enclosure class	44	IP
Insulation class, motor	F
Capacitor	2	µF
Duct connection	300x150	mm
Max. flow @ 0Pa	149	l/s
Max. pressure	454	Pa
Voltage range	220-240	V

Product information sheet

Parameter	Value	Unit
(a) Manufacturer	Östberg	-
(b) Model code	RKB 300x150 C1	-
(c) Declared type	NRVU / UVU	-
(d) Type of drive	Variable speed drive	-
(e) Type of HRS	N/A	-
(f) Thermal efficiency	N/A	%
(g) Nominal flow rate	0.080	m³/s
(h) Effective power input	0.063	kW
(i) SFP int	N/A	W/(m³/s)
(j) Face velocity	2.5	m/s
(k) Nominal external pressure	203	Pa
(l) Internal pressure drop	N/A	Pa
(n) Static efficiency	20.8	%
(o) External (and internal) leakage rate	0.46	%
(p) Filter classification	N/A	-
(q) Visual filter warning	N/A	-
(r) Sound power level	57	dB LwA
(s) Disassembly instructions	www.ostberg.com	-

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