IN-LINE RECTANGULAR DUCT FANS
IRB/IRT Series

Range of rectangular duct fans suitable for many general ventilation applications where the fan is required to be installed within a rectangular ducted ventilation system or where the space for installation is limited.
High performance centrifugal fans.
All models suitable for mounting in any orientation.
Casing manufactured from heavy gauge galvanised sheet steel.
Direct drive backward curved impellers manufactured from aluminium sheet.
External rotor motor, Class F insulation with thermal protection.
Remote terminal box.

Motors
Motor and impeller fitted on the inspection cover enabling easy cleaning and maintenance.
- IRB models: Single-phase 230V-50Hz.
IP44* or IP54. Speed controllable by transformer.
- IRT models: Three-phase 230/400V-50Hz.
IP54. Speed controllable by transformer or frequency drive.

* IP44: 2-180, 2-200, 4-225 and 4-315 A
Fan size
Number of poles
Model Short Description
+ IRB/2-180 230V50Hz 190/60 VE IN-LINE RECTANGULAR DUCT FANS
IRB/IRT Series
+ IRB/2-200A 230V50Hz 225/88 VE IN-LINE RECTANGULAR DUCT FANS
IRB/IRT Series
+ IRB/2-200B 230V50Hz 250/84 VE IN-LINE RECTANGULAR DUCT FANS
IRB/IRT Series
+ IRB/4 315B 230V50Hz 400/140 VE IN-LINE RECTANGULAR DUCT FANS
IRB/IRT Series
+ IRB/4 355 230V50Hz 450/125 VE IN-LINE RECTANGULAR DUCT FANS
IRB/IRT Series
+ IRB/4-225 230V50Hz 315/90 VE IN-LINE RECTANGULAR DUCT FANS
IRB/IRT Series
+ IRB/4-315A 230V50Hz 355/100 VE IN-LINE RECTANGULAR DUCT FANS
IRB/IRT Series
+ IRB/6 400 230V50Hz 560/180 VE IN-LINE RECTANGULAR DUCT FANS
IRB/IRT Series
+ IRB/6 450 230V50Hz0 630/200 VE IN-LINE RECTANGULAR DUCT FANS
IRB/IRT Series
+ IRB/6-315 230V50Hz 500/140 VE IN-LINE RECTANGULAR DUCT FANS
IRB/IRT Series
+ IRB/6-355 230V50Hz 560/125 VE IN-LINE RECTANGULAR DUCT FANS
IRB/IRT Series
+ IRT/4 315A 230/400V50Hz 355/100 VE IN-LINE RECTANGULAR DUCT FANS
IRB/IRT Series
+ IRT/4-315B 230/400V50Hz 400/140 VE IN-LINE RECTANGULAR DUCT FANS
IRB/IRT Series
+ IRT/4-355 230/400V50Hz 450/125 VE IN-LINE RECTANGULAR DUCT FANS
IRB/IRT Series
+ IRT/4-400A 230/400V50Hz 500/140 VE IN-LINE RECTANGULAR DUCT FANS
IRB/IRT Series
+ IRT/4-400B 230/400V50Hz 560/140 VE IN-LINE RECTANGULAR DUCT FANS
IRB/IRT Series
+ IRT/4-450 230/400V50Hz 560/160 VE IN-LINE RECTANGULAR DUCT FANS
IRB/IRT Series
+ IRT/6-355 230/400V50Hz 560/125 VE IN-LINE RECTANGULAR DUCT FANS
IRB/IRT Series
+ IRT/6-400 230/400V50Hz 560/180 VE IN-LINE RECTANGULAR DUCT FANS
IRB/IRT Series
+ IRT/6-450 230/400V50Hz 630/200 VE IN-LINE RECTANGULAR DUCT FANS
IRB/IRT Series