LPKB 250 D1 EC | H. Östberg

LPKB 250 D1 EC Updated: 2025-06-03

7540820 -

LPKB 250 D1 EC-y2

Low profile duct fan with circular connections.
A small and useful duct fan which are perfect for spaces with minimum height clearance.
With one connection on the inlet side.
High capacity and efficiency with low sound levels.
Impeller with backward curved blades.
The external rotor motor has maintenance-free sealed ball-bearings and is very energy efficient.
Speed controlling can be done with the built-in potentiometer, 0-10 V alt. external control.
Integrated motor protection.
Junction box has enclosure class IP 54.
Fan housing is manufactured from galvanized sheet steel.
Duct connections are equipped with rubber seals.
The fan is intended to be installed in a duct system.
A duct connected fan can be installed outside or in damp environments.
The mounting brackets simplify 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...

	LPKB 250 D1 EC-y2 7540820
Parameter	Value	Unit
Voltage	230	V
Phase	1	~
Frequency	50/60	Hz
Power	150	W
Current	1.22	A
Speed	2800	r.p.m.
Max. temperature of transported air	60	°C
Sound pressure level at 3 m	49	dB(A)
Weight	8.5	kg
Enclosure class	44	IP
Insulation class, motor	F
Duct connection	250	mm
Max. flow @ 0Pa	327	l/s
Max. pressure	673	Pa
Voltage range	200-277	V

Parameter	Value	Unit
(a) Manufacturer	Östberg	-
(b) Model code	LPKB 250 D1 EC	-
(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	0.175	m³/s
(h) Effective power input	0.146	kW
(i) SFP int	N/A	W/(m³/s)
(j) Face velocity	3.6	m/s
(k) Nominal external pressure	399	Pa
(l) Internal pressure drop	N/A	Pa
(n) Static efficiency	45.7	%
(o) External (and internal) leakage rate	0.83 (N/A)	%
(p) Filter classification	N/A	-
(q) Visual filter warning	N/A	-
(r) Sound power level	56	dB LwA
(s) Disassembly instructions	fsp.ostberg.com	-