IRE 315 B3 | H. Östberg

IRE 315 B3 Updated: 2025-11-03

7900240 -

IRE 315 B3 ErP

Insulated duct fan with circular connections.
Equipped with 50 mm of thermal and acoustic insulation makes it ideal for handling cold air.
Designed for high pressure and long, complicated duct runs.
The design prioritise functionality, durability and longevity.
Impeller with forward 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 electronic speed controller can be connected.
The 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.

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)

400

Efficiency (%)

SFPv (kW/m3/s)

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

Generating diagrams...

	IRE 315 B3 ErP 7900240
Parameter	Value	Unit
Voltage	400	V
Voltage Delta	230	V
Phase	3	~
Frequency	50	Hz
Power	638	W
Current	1.38	A
Current Delta	2,4	A
Speed	1290	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	49	dB(A)
Weight	30.7	kg
Enclosure class	54	IP
Insulation class, motor	F
Duct connection	315	mm
Max. flow @ 0Pa	601	l/s
Max. pressure	357	Pa
Voltage range	380-415	V

Parameter	Value	Unit
(a) Manufacturer	Östberg	-
(b) Model code	IRE 315 B3	-
(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	0.305	m³/s
(h) Effective power input	0.325	kW
(i) SFP int	N/A	W/(m³/s)
(j) Face velocity	3.9	m/s
(k) Nominal external pressure	308	Pa
(l) Internal pressure drop	N/A	Pa
(n) Static efficiency	34.8	%
(o) External (and internal) leakage rate	0.25	%
(p) Filter classification	N/A	-
(q) Visual filter warning	N/A	-
(r) Sound power level	54	dB LwA
(s) Disassembly instructions	www.ostberg.com	-