Three-phase version: Axial wall fan with square wall plate, in three-phase version. Brief description: For surface mounting. Protective grille on the suction side, contact protection in accordance with DIN EN ISO 13857. 8-blade impellers made of glass fiber reinforced polyamide. Thermal overload protection as standard. Fans meet the requirements of the European Ecodesign Regulation (EC) No. 327/2011 Directive 2009/125/EC. Vibration-free operation thanks to dynamically balanced impeller and motor (shaft-rotor), in accordance with quality level 6.3, DIN ISO 1940, Part 1. High efficiency on the ventilation side, low operating noise. Increased durability thanks to high-quality materials such as low-noise ball bearings. Fans are maintenance-free. Can be installed in any position for ventilation and exhaust ventilation. Air flow direction: The air flow direction is marked. Standard exhaust air operation, air flow direction suction via motor. Three-phase motor: DZQ/DZS series. Asynchronous motor. Not suitable for conveying air saturated with water vapor. Rated voltage 400 V, 50 Hz. Protection class IP 55. Exception for type DZQ ... D IP 54. Speed controllable. Exception for type DZQ 40/2 B and DZS 40/2 B. Devices can be switched in stages using an optional 5-stage transformer. Reversible. Reversing operation: The volume flow is reduced by approx. 35% if the conveying direction is abnormal. Thermal overload protection as standard. Exception for type DZQ/DZS 25/4 D and pole-changing axial wall fans available on request. The connections are potential-free on terminals and must be connected to a motor protection switch, e.g. MV 25-1, or the control circuit of a contactor. Pole-changing fans: Ensure overload protection with a motor protection switch to be provided by the customer. Pole-changing motors with speed ratios of 8/4 or 4/2 are connected according to the Dahlander principle. Electrical connection: On the terminal block in the end cover of the motor. Safety instructions: The fan may only be operated if the impeller is protected against contact in accordance with DIN EN ISO 13857, e.g. with Maico protective grille SG. Article: DZQ 30/84 B, Design: Square wall plate, Delivery volume: 900 m3/h / 1800 m3/h, Speed: 715 1/min / 1425 1/min, Impeller type: axial, Speed controllable: yes, Reversibility: yes, Voltage type: three-phase current, Rated voltage: 400 V, Mains frequency: 50 Hz, Nominal power: 40 W / 100 W, INom: 0.1 A / 0.3 A, IMax: 0.1 A / 0.3 A, Protection type: IP 55, Thermal class: B, Pole-changing: yes, Number of poles at high speed: 4, Number of poles at low speed: 8, Mains cable: 5 / 1.5 mm2, Installation location: wall / ceiling, Installation type: surface-mounted, Installation position: horizontal / vertical, Material: sheet steel, galvanized, Color: silver, Weight: 7.74 kg, Weight with packaging: 9.25 kg, Nominal width: 300 mm, Width: 465 mm, Height: 465 mm, Depth: 241 mm, Width with packaging: 480 mm, Height with packaging: 480 mm, Depth with packaging: 320 mm,Conveyor temperature at rated current: 60 °C, Conveyor temperature at IMax: -20 °C to 60 °C, Cover flap: without