Helios Ventilatoren High performance fan HRFW EC 400 B Manufacturer :Helios Ventilatoren Designation :High performance fan Axial 1-PH 200-277V Type :HRFW EC 400 B Housing material :Steel, treated Air volume unloaded :5850 m³/h Supply voltage :230 V Power consumption :0.65 kW With thermal protection :yes Direct current motor :no Indirect drive :no Electrical connection :Connection terminals Protection class (IP) :IP44 Max. air temperature :40 °C Motor with 2 speeds :no Air temperature :40 °C Motor with 2 speeds :no Suitable for electronic control :yes Suitable for frequency control :no Suitable for low current control :no Suitable for transformer control :no Pole-changing :no Length :330 mm Casing diameter :465 mm Duct diameter :400 mm Connection :Flange Helios Ventilatoren HRFW EC 400 B high performance fan: further details EC axial high performance fan Cylindrical duct made of galvanised sheet steel, with impeller enclosing, flange formed on both sides, hole pattern to DIN 24155, standard terminal box (protection class IP 54) on the outside of the duct. Impeller with high-performance characteristics with profiled blades made of plastic, aerodynamically optimised for the application, dynamically balanced. Energy-saving, speed-controllable EC external rotor motor in protection class IP 54 with maximum efficiency. Maintenance-free and interference-free, excellent electromagnetic compatibility (EMC), ball bearing mounted. Integrated electronic temperature monitoring for EC motor and electronics. Infinitely variable speed control via speed potentiometer. Control via three-step switch or infinitely variable via universal control system or electronic differential pressure/temperature controller possible. , EAN: 4010184049272.