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.MotorsMotor 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
