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  • New item   -22.14€Electronic fan speed controller from max. to min. | 2.5A | 230VAC | surface-mounted/flush-mounted | IP54/IP44 | Sentera Controls | MTXN0-25-AT
    New item   -22.14€Electronic fan speed controller from max. to min. | 2.5A | 230VAC | surface-mounted/flush-mounted | IP54/IP44 | Sentera Controls | MTXN0-25-AT 1
    New item   -22.14€Electronic fan speed controller from max. to min. | 2.5A | 230VAC | surface-mounted/flush-mounted | IP54/IP44 | Sentera Controls | MTXN0-25-AT 2
    New item   -22.14€Electronic fan speed controller from max. to min. | 2.5A | 230VAC | surface-mounted/flush-mounted | IP54/IP44 | Sentera Controls | MTXN0-25-AT 3
    New item   -22.14€Electronic fan speed controller from max. to min. | 2.5A | 230VAC | surface-mounted/flush-mounted | IP54/IP44 | Sentera Controls | MTXN0-25-AT 4

    Electronic fan speed controller from max. to min. | 2.5A | 230VAC | surface-mounted/flush-mounted | IP54/IP44 | Sentera Controls | MTXN0-25-AT

    Code: MTXN0-25-AT
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  • Product description

    Electronic fan speed controller from max. to min. | 2.5A | 230VAC | surface-mounted/flush-mounted | IP54/IP44 | Sentera Controls | MTXN0-25-AT

    MTXN0-25-AT – Sentera Controls compact wall-mounted fan speed controller with a knob for single-phase 230 VAC fans (0.2–2.5 A). Turning the knob decreases the speed from maximum to minimum (max.→min.).

    Key idea:
    The simplest and most affordable way to control the speed of a small AC fan: a single knob with an OFF position, installed like a standard wall switch.
    What it is for MTXN0-25-AT:
    This model is designed for medium-power fans (up to 2.5 A) – duct fans in offices, classrooms, retail premises or 2–3 smaller fans together.
    Motor current
    0.2–2.5 A
    Control
    Knob, max.→min.
    Power supply
    230 VAC ±10 %, 50 Hz
    Installation
    Surface-mounted IP54 / flush-mounted IP44

    Operating principle

    The controller is surface-mounted or installed in a flush-mounted box. Connect the power supply and the motor; the unregulated 230 V output (up to 2 A) is used for the OFF position connection.

    Phase-angle control: the effective value of the motor supply voltage is varied; the output voltage is not purely sinusoidal. Regulated output – 80–230 VAC.

    The minimum speed (80–180 VAC, factory setting 100 VAC) is set with an internal trimmer. The OFF position can be retained or disabled via the wiring diagram – the fan then runs continuously and only the speed is changed.

    Engineer's note: with an AC induction motor, reducing the voltage increases rotor losses, so the savings are lower than with an EC fan or a frequency inverter; when completely silent operation at low speed is essential, choose a transformer controller with a sinusoidal output voltage.

    Benefits MTXN0-25-AT?
    Compact, inexpensive and simple: no programming required, and a spare fuse is already included.

    Technical specifications

    Product type Electronic fan speed controller with knob
    Manufacturer / code Sentera Controls / MTXN0-25-AT
    Series MTXN0 (0.5 / 1.5 / 2.5 / 4 A); opposite direction – MTYN0
    Supply voltage 230 VAC ±10 %, 50 Hz
    Motor current 0.2–2.5 A
    Regulated output 80–230 VAC
    Min. speed 80–180 VAC, internal trimmer (factory setting 100 VAC)
    Knob direction max.→min.
    Unregulated output 230 VAC, max. 2 A
    OFF position Yes; disabled via the wiring diagram
    Protection Fuse F 3.15 A H, 5×20 mm (spare included)
    Protection class IP54 surface-mounted / IP44 flush-mounted (EN 60529)
    Operating environment 0…+35 °C, non-condensing
    Cables Up to 2.5 mm²
    Weight 0.17 kg (net)
    Compliance LVD 2014/35/EU, EMC 2014/30/EU, RoHS, WEEE 2012/19/EU

    Manufacturer documentation

    ✔ Recommended by Elektrotechnikos sprendimai

    Original manufacturer documentation – technical data, wiring diagrams and installation instructions.

    Main functions

    • Knob with OFF – switching on, speed and switching off – with one controller.
    • Direction max.→min. – when the knob is turned, the fan starts from full speed.
    • Adjustable min. speed – set with a trimmer so that the motor always rotates reliably.
    • Continuous operation mode – The OFF position can be disabled – the fan then runs continuously.
    • Several fans – several can be connected to one controller without exceeding the max. current.

    Where is it used?

    • Bathrooms, toilets, kitchens
    • Offices and small rooms
    • Storerooms, garages
    • Duct and axial fans with AC motors
    • Replacement of old manual controllers

    On-demand operation

    For the electrician.
    Installed like a wall switch, no programming.
    For the ventilation installer.
    Min. speed is set on site with a screwdriver.
    For the user.
    One knob – switch on, adjust, switch off.

    Application guide: how it is used in practice

    Typical MTXN0-25-AT applications:

    Site What is connected Result Installer's note
    Bathroom, toilet Extract fan → regulated output The fan is switched on and adjusted with a single knob Set the min. speed with the trimmer
    Continuously running ventilation Connection without OFF position The fan always runs; only the speed is changed See the manufacturer's wiring diagram
    Several fans in one room Several fans of the same type in parallel All controlled with a single knob Total current – no more than 2.5 A

    How to select the controller current

    Rated current of the motor(s) Recommended model
    up to 0.5 A MTXN0-05-AT (0.5 A)
    0.5–1.5 A MTXN0-15-AT (1.5 A)
    1.5–2.5 A MTXN0-25-AT (2.5 A) ← this model
    2.5–4 A MTXN0-40-AT (4 A)
    Rule: controller max. current ≥ motor rated current (see the motor nameplate). The starting current is already accounted for by the manufacturer; no additional margin is needed. When connecting several fans – motors of the same type – add up their rated currents. Do not choose an oversized model for a small fan – each model also has a minimum current.
    When to choose another solution: opposite knob direction needed – MTYN0 series; LED indication needed – LTX / LTY series; sensor or Modbus control needed – EVS-1 series; higher current – ITR-9 series; for an EC fan – an EC potentiometer.

    Pros

    • Compact and inexpensive
    • Knob with OFF position
    • Adjustable min. speed
    • Spare fuse included
    • Surface or flush mounting

    Cons / limitations

    • Motor current – 0.2–2.5 A
    • No 0-10 VDC input and no Modbus
    • Operating temperature 0…+35 °C
    • Only for single-phase voltage-controllable motors; not suitable for EC fans
    • The output voltage is non-sinusoidal – some motors may hum audibly at low speed

    Safety and installation notes

    • Installation and connection must be carried out by a qualified electrician with the power disconnected.
    • Check that the motor current is within 0.2–2.5 A and that the motor is suitable for voltage control.
    • Adjust the min. speed with an insulated screwdriver.
    • Intended for indoor use only.

    Quick selection guide

    2.5 A
    230 VAC
    Knob max.→min.
    IP54 / IP44
    Suitable when you need:
    • simple manual control without automation;
    • fan current 0.2–2.5 A;
    • installation like a wall switch.
    Check before use:
    • the motor current and whether it is voltage-controllable;
    • the required knob direction (MTXN0 – max.→min.);
    • whether an OFF position is required.
    Important reminder: MTXN0-25-AT does not control EC fans or three-phase motors.

    FAQ

    What is the difference between MTXN0 and MTYN0?
    Only in the knob direction: MTXN0 – max.→min., MTYN0 – min.→max. The electrical parameters are the same.
    Can a minimum speed be set?
    Yes, with an internal trimmer within 80–180 VAC (factory setting 100 VAC).
    Can the fan run continuously?
    Yes, the OFF position can be disabled via the wiring diagram.
    Is it suitable for EC fans?
    No, only for single-phase voltage-controllable AC motors.

    Electronic fan speed controller from max. to min. | 2.5A | 230VAC | surface-mounted/flush-mounted | IP54/IP44 | Sentera Controls | MTXN0-25-AT

    Sentera MTXN0-25-AT – compact wall-mounted fan speed controller with a knob (max.→min.), 0.2–2.5 A, 230 VAC, with OFF position and adjustable min. speed.

    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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