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  • New item   Rectangular duct radial fan with external motor | 5000 m³/h | 0.75 kW | 3×380 V | 700×400 mm | IE3 | IP55 | ESLP21725
    New item   Rectangular duct radial fan with external motor | 5000 m³/h | 0.75 kW | 3×380 V | 700×400 mm | IE3 | IP55 | ESLP21725 1

    Rectangular duct radial fan with external motor | 5000 m³/h | 0.75 kW | 3×380 V | 700×400 mm | IE3 | IP55 | ESLP21725

    Code: ESLP21725
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    Price 754.87 € VAT incl.
    ( 623.86 € VAT excl. )
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    Rectangular duct radial fan ESLP21725 with external 0.75 kW IE3 motor: up to 5000 m³/h, 3×380 V, 700×400 mm connection, IP55.

  • Product description

    Rectangular duct radial fan with external motor | 5000 m³/h | 0.75 kW | 3×380 V | 700×400 mm | IE3 | IP55 | ESLP21725

    Radial fan for rectangular ducts with a three-phase IE3 motor mounted outside the airflow. The 0.75 kW, 1454 rpm motor delivers up to 5000 m³/h, and the 700×400 mm connections fit rectangular ducts directly.

    Key point:
    The motor sits outside the housing, so it is not affected by the heat and humidity of the conveyed air and is easy to service. Galvanised steel housing, IP55 protection and S1 continuous duty – a solution for commercial and industrial ventilation systems.
    Airflow
    5000 m³/h
    Power / voltage
    0.75 kW / 3×380 V
    Speed
    1454 rpm
    Protection
    IP55

    We will help you set up speed and automatic control

    We will advise how to adjust this fan's speed and how to switch or control it automatically according to room conditions – humidity, temperature or CO₂ concentration. We will select a suitable speed controller, thermostat, humidity or CO₂ sensor and explain how to connect them.

    Contact us: tel. +370 658 01033 or e-mail info@elsprendimai.eu

    In your e-mail, briefly describe the situation: room purpose and size, fan model and what you want to control – speed, humidity, temperature or CO₂.

    Wholesale quantities: special prices for larger orders. State the required quantity in your e-mail and we will send you an individual offer.

    Operating principle

    The radial impeller draws air from the duct and discharges it to the opposite rectangular connection – the air moves in a straight line, so the fan is installed directly in the duct run. The radial design provides higher pressure than axial fans and overcomes the resistance of filters, heaters and long ducts.

    The three-phase asynchronous 0.75 kW IE3 motor is mounted on top of the housing and runs at 1454 rpm. Speed is best controlled with a frequency inverter, matching the output to real demand, humidity, temperature or CO₂ level.

    Why choose this fan?
    High airflow in a rectangular duct without extra transitions, and the external motor lasts longer and is easier to service.

    Technical specifications

    Product type Rectangular duct radial fan with external motor
    Code ESLP21725
    Max. airflow 5000 m³/h
    Motor power 0.75 kW
    Power supply 3-phase, 380 V, 50 Hz
    Speed 1454 rpm
    Noise level 63 dB(A)
    Connection (W × H) 700 × 400 mm
    Length 790 mm
    Overall height incl. motor 641 mm
    Housing Galvanised sheet steel
    Impeller Galvanised steel / aluminium
    Motor efficiency class IE3
    Insulation class F
    Protection class IP55
    Duty S1 (continuous)
    Operating temperature −20 °C to +50 °C
    Standard EN 60204-1
    Country of origin Turkey

    Main functions

    • High capacity – Up to 5000 m³/h in rectangular ducts.
    • External motor – Unaffected by conveyed air, easy to access for maintenance.
    • IE3 efficiency – Lower energy costs in continuous operation.
    • IP55 protection – Motor protected against dust and water jets.
    • Speed control – Via frequency inverter – by demand, humidity, temperature or CO₂.

    Where is it used?

    • Commercial supply and extract systems
    • Shopping centres, offices, sports halls
    • Production halls and warehouses
    • Restaurant and kitchen extraction (with grease filters)
    • Air handling units with filters and heaters
    • Boiler rooms and plant rooms

    Use by need

    For designers.
    Standard rectangular duct sizes and clear data make selection easy.
    For installers.
    Installed directly in the duct run, no transitions to circular ducts.
    For businesses.
    IE3 motor and S1 duty – long service life and lower running costs.

    Practical application

    When selecting the fan, consider the required air volume and system resistance: the stated 5000 m³/h is achieved at zero resistance. We recommend a frequency inverter and flexible connectors so vibration is not transmitted to the ducts.

    Pros

    • Up to 5000 m³/h airflow
    • External IE3 motor
    • IP55, S1 duty
    • Direct installation in rectangular duct
    • Speed control by frequency inverter

    Cons / limitations

    • Requires three-phase 380 V supply
    • Needs space above the duct for the motor (641 mm overall height)
    • Not certified for fire smoke extraction systems

    Safety and installation notes

    • Installation and connection must be carried out by a qualified electrician
    • Fit a circuit breaker and motor protection in the supply circuit
    • Connect the fan to ducts via flexible connectors
    • Disconnect power before maintenance
    • Do not use in explosive atmospheres or for aggressive gases

    Quick selection guide

    5000 m³/h
    0.75 kW
    700×400 mm
    IP55
    Suitable when you need:
    • build a supply or extract system with rectangular ducts
    • replace an old duct fan with a higher-capacity model
    • control ventilation by humidity, temperature or CO₂ with an inverter
    Check before use:
    • three-phase 380 V supply is available
    • the duct size is 700×400 mm
    • there is space for the motor above the duct
    • the pressure is sufficient for your system
    Important reminder: A rectangular duct fan works best with straight duct sections before and after it.

    FAQ

    Why is the motor outside?
    So it is not affected by warm or humid conveyed air, is better cooled and easier to service.
    How is the speed controlled?
    With a frequency inverter – it can be driven by humidity, temperature or CO₂ sensors.
    Is it suitable for kitchen extraction?
    Yes, with grease filters; conveyed air temperature up to +50 °C.
    Is it suitable for fire smoke extraction?
    No, the fan is not certified for smoke extraction systems.
    What voltage is required?
    Three-phase 380 V, 50 Hz.

    ESLP21725 duct fan 5000 m³/h, 700×400 mm

    Rectangular duct radial fan ESLP21725 with external 0.75 kW IE3 motor: up to 5000 m³/h, 3×380 V, 700×400 mm connection, IP55.

    Illustrative image may have been created using AI. The appearance of the product may differ slightly from the image shown. Please refer to the technical specification.

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