DD Series

The DD Centrifugal Blowers (double suction) and DDD Centrifugal Blowers (quadruple suction with central motor), are designed for conditioning, heating, refrigeration applications, where good air-flow levels, static pressure and low noise level are required.

29 – 60 W

0,17 – 0,46 A

90 – 280 m3/h

Centrifugal Blowers DD_DDD

Technical specifications

  • Single phase, 2-shaded poles, impedance protected motor, built according to the CE mark requirements, in compliance with EN 60335-1 standard, with self-aligning and self lubricating sleeve bearings with big oil reservoir.

  • Motor with minimum 130° “B” insulation class.

  • Suitable for continuous operation in ambient temperature from -10 °C to +50 °C.

  • Electrical connection by 6,3 x 0,8 mm, radial or axial, male faston-type connectors, directly fixed on coil.

  • Double suction Ø 67 – Ø 76 mm aluminum impeller with forward curved constant thickness blades and internal reinforcement discs.

  • Housing made of pre-galvanized metal sheet, thanks to the high aeraulic efficiency it guarantees an excellent yield in terms of air flow, static pressure and low noise level.

On request

  • Version with IMQ – CSV approved motor.

  • Quadruple suction version:DDD model (two housings with central motor).

  • Motor with different powers and insulation classes: 155° “F” – 180° “H”.

  • Supply voltage from 12V to 400V 50/60 Hz.

  • Version with dual voltage and/or double speed.

  • Electrical connection by axial male faston-type connectors and/or different cable lengths.

  • Motor coil winding with IP55 protection.

  • Protection against dust and/or humidity.

  • Thermal protector or thermal fuse.

  • HT version for operation from -30 °C to +100 °C.

  • Built in compliance with UL – CSA standards.

  • Version fitted with ball bearings.

  • Version built to customers design.

Motor position – Radial Faston

Motor position – Axial Faston

Product Identification Code

DD = single.
RD = motor central position with double blower:
R = motor on the right of the air outlet.
L = motor on the left of the air outlet.
67/76Impeller diameter and height.
P.30Motor type.
TThermal protection:
T = thermal protector.
F = thermal fuse.
Blank = impedance protected.
1Coil winding code.
RElectrical connection:
R = radial faston-type connectors.
A = axial faston-type connectors.
C = cables.
DNMotor position.
HTOn request:
HT = high-temperature version.
IV - IM = low temperature with high relative humidity up to 92%. *
INC = coil insulation with IP55 protection. *
BBOn request:
BB = ball bearings on motor.
VROn request:
VR = fitted with cooling fan on motor side.
230Supply voltage.
50Rated frequency.

* IV version

Impregnated coil through dip-coating using epoxy transparent paint (standard stator coil dip-coating process).

* IM version

Impregnated coil through dip-coating using transparent epoxy paint with silicone applied on contacts at the end of winding, three-pole wire and coil covered by a nylon cap. The coil is not drowned in the resin but visible; caution should be paid when mounting the motor so that the cap open part faces downward to prevent its filling up with condensate.

* INC version

Coil with IP55 protection, the coil is completely drowned into the epoxy resin.

L . Motor on left side

R .  Motor on right side





Characteristic curves

DD 67/76
DD 76/86
DDD 67/76
DDD 76/86

DD Series