DZS 40 / 4 B, axial wall fan DZS 40 / 4 B steel wall ring, current, DN400

Rotary current version: Axial wall fan with steel wall ring, in rotary current version. Short description: Protection grid on the suction side, contact protection according to DIN EN ISO 13857. 8-leaf wing wheels made of glass fibre-reinforced polyamide. Thermal overload protection as standard. Ventilators meet the requirements of European ecodesign Regulation (EC) No 327 / 2011 Directive 2009 / 125 / EC. Vibration-free run by dynamically weighted wing wheel and engine (wave rotor), according to quality level 6.3, DIN ISO 1940, part 1. High ventilation-side efficiency, low operating noise. Increased durability through high-quality materials such as low-noise ball bearings. Fans are maintenance-free. Reversible operation of the fans possible. Customer-specific special voltages as special versions available on request and at an additional price. Installation possible for ventilation and ventilation in any location. Support direction: The support direction is marked. Standard exhaust air operation, direction of transport via engine suction. Rotary current motor: Asynchronous motor. Not suitable for the production of steam-saturated air. Rating voltage 400 V, 50 Hz. Protection type IP 55. Exemptions for type DZQ... D IP 54. Speed controllable. The exception for type DZQ 40 / 2 B and DZS 40 / 2 B. Devices can be switched with an optional 5-step transformer. Reversible. Reverse operation: The volume flow rate is reduced by about 35% with an abnormal direction of transport. Thermal overload protection as standard. Exemptions for type DZQ / DZS 25 / 4 D and polo-switchable axial wall fans available on request. The connections are free of potential to clamps and must be connected to a motor full-length protection switch e.g. MV 25 or the control circuit of a protection. Polo-switchable fans: ensure overload protection with the fully-designed engine protection switch. Polo-switchable engines with the speed ratios 8 / 4 or 4 / 2 are switched in the dahlander principle. Electric connection: on the terminal bar in the engine's final cover. Safety instructions: The fan may only be put into operation if the contact protection of the wheel is guaranteed in accordance with DIN EN ISO 13857, for example with Maico protection grid SG.