Helios HELI SB250C Pipe fan Silentbox free-blowing 1-phase

Helios Fans Duct Fan SB 250 C

Manufacturer: Helios Fans
Designation: Duct Fan 1 PH Soundproof
Type: SB 250 C
Housing Material: Treated Steel
Air Volume Unloaded: 960 m³/h
Connection Voltage: 230 V
Power Consumption: 0.255 kW
With Thermal Protection: Yes
DC Motor: No
Indirect Drive: No
Electrical Connection: Cable
Protection Class (IP): IP44
Max. Air Temperature: 50 °C
Motor with 2 Speeds: No
Suitable for Electronic Control: Yes
Suitable for Frequency Control: No
Suitable for Low Voltage Control: No
Suitable for Transformer Control: Yes
Pole Switchable: No
Length: 400 mm
Duct Diameter: 250 mm
Connection: Insertion End

The Helios Fans Duct Fan SB 250 C is a radial duct fan with a soundproof housing. The housing is made of galvanized sheet steel and is compatible with round connection flanges for standard ducts. The sound-absorbing perforated sheet interior lining is backed with a 50 mm thick mineral fiber board. The cover is removable, and the fan chamber as well as the housing spiral are easily accessible. The motor and impeller are removable.

The high-performance drum impeller features forward-curved blades made of galvanized sheet steel. The operation is vibration-free due to dynamic balancing according to quality level G 6.3 VDI 2060 and DIN ISO 1940. The single-phase AC external rotor motor has a closed design, is maintenance-free, and the speed can be controlled by reducing the voltage. Built-in thermal contacts and sealed, low-noise ball bearings with long-term lubrication ensure reliable performance.