AC version: Axial wall fan with steel wall ring, in AC 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. AC motor: EZQ/EZS series. Asynchronous motor. Not suitable for conveying air saturated with water vapor. Rated voltage 230 V, 50 Hz. Fans ... B: Capacitor motors with operating capacitor on the protective grille or on the wall sleeve, protection class IP 55. Fans ... D: Capacitor motors with operating capacitor in the terminal box, protection class IP 54. Fans ... E: Shaded pole motors, protection class IP 54. Speed controllable. Exception for type EZQ 45/6 B. Devices can be continuously controlled with an optional speed controller or they can be switched in stages with an optional 5-stage transformer. Reversible. Exception for fans with shaded pole motor (... E). Reversing operation: The volume flow is reduced by approx. 35% if the conveying direction is abnormal. Thermal overload protection as standard. Electrical connection: On terminal block in the end cover of the motor. Safety instructions: The fan may only be put into operation if the impeller is protected against contact in accordance with DIN EN ISO 13857, e.g. with a Maico protective grille SG. Article: EZS 40/4 B, design: steel wall ring, delivery volume: 4350 m3/h, delivery volumeNominal: 3060 m3/h / in opt. efficiency, pressure pfs, nominal: 88 Pa - in opt. efficiency, speed nNominal: 1380 1/min - in opt. efficiency, speed: 1426 1/min, impeller type: axial, speed controllable: yes, reversible: yes, voltage type: alternating current, rated voltage: 230 V, mains frequency: 50 Hz, rated power: 249 W / in opt. efficiency, INom: 1.1 A / in opt. Efficiency, IMax: 1.5 A, Protection class: IP 55, Thermal class: F, Pole-changing: no, Installation location: wall / ceiling, Installation type: surface-mounted, Installation position: horizontal / vertical, Material: sheet steel, galvanized, Color: silver, Weight: 8.27 kg, Weight with packaging: 11.08 kg, Nominal width: 400 mm, Width: 580 mm, Height: 580 mm, Depth: 275 mm, Width with packaging: 615 mm, Height with packaging: 615 mm, Depth with packaging: 400 mm, Conveyor temperature at nominal current: 60 °C, Conveyor temperature at IMax: -20 °C to 60 °C, Overall efficiency e: 30%, Measurement category: A,Efficiency category: static, Efficiency level N: 40.2, VSD required: no, Year of manufacture: see type plate, Manufacturer name / Official registration number / Manufacturer's place of business: Maico Elektroapparate-Fabrik GmbH / Register court Freiburg, HRB 601233 / Villingen-Schwenningen, PBEP / Discharge volumeBEP / Pfs, BEP: 0.249 kW / 3060 m3/h / 88 Pa, nBEP: 1380 1/min, Specific ratio: approx. 1, Information on dismantling and disposal: see assembly instructions, Information on installation, operation and maintenance: see assembly instructions, Items used in the efficiency measurement that are not described by the measurement category: -, Sound power levelLWA7: 81 dB(A), Cover flap: without