HOFTRONIC™ - Rotary LED dimmer HD300W - 0.5-300 watts - Suitable for trailing edge & leading edge - 2-wire dimmer - Recessed dimmer - Universal

Rotary LED 300W Universal Dimmer – Silent Dimming with Maximum Control

Looking to dim your LED lighting smoothly without buzzing or flickering? Then the HOFTRONIC 300W LED dimmer is exactly what you need. With support for both trailing edge and leading edge dimming and a maximum capacity of 300 watts, this dimmer offers maximum flexibility and virtually silent operation.

Whether you need bright lighting to work by or a cosy atmosphere for relaxing evenings, this built-in dimmer makes it easy to adjust your lighting to suit any setting. Thanks to its advanced settings, you can fine-tune the dimming behaviour to match your specific LED lamps—without compromising on ease of use or safety.

Product Features

• Universally compatible: Suitable for all dimmable LED lights from 0.5 to 300 watts (RC) and from 0.5 to 150 watts (RL).
• Precise dimming control: Adjust light levels using three dedicated settings: MIN, MAX, and BOOST.
• Silent operation: No buzzing or humming, thanks to high-quality electronic components.
• 2-wire installation: Operates without a neutral wire – ideal for retrofitting in existing installations.
• Two-way switching: Can be controlled from two locations with appropriate wiring.
• Hotel circuit/changeover circuit: This dimmer is designed for use in a changeover circuit, where one dimmer and one traditional changeover switch are used together. This allows you to control the same group of lights from two locations: dimming at one point and switching on/off at the other.
• Compact design: Fits standard flush-mounted boxes (DIN 49073, 70.5 x 70.5 x 24 mm).
• Switchable dimming mode: Easily toggle between trailing edge and leading edge dimming via a slide switch.

Setting the LED dimmer with MIN, MAX & BOOST

This built-in dimmer is equipped with three handy adjustment screws that allow you to adjust the lighting in detail to suit your situation. These settings are located on the front of the dimmer and can be easily adjusted with a small screwdriver:

• MIN: This sets the minimum light level. This is useful if you notice that your lights start to flicker or become unstable at the lowest setting. By setting the MIN slightly higher, you can prevent this problem and ensure that the light always remains constant.
• MAX: This determines the maximum brightness of the light. This is ideal if, for example, you never need full light, or if you want to prevent the lighting from becoming too bright in smaller rooms.
• BOOST: This function helps prevent the so-called ‘popcorn effect’. This is the phenomenon where the lights first flash brightly when switched on and only then dim to the desired level. By adjusting the BOOST correctly, you switch the lighting directly to the correct setting – without unwanted flashes of light.

Thanks to these three settings, you can fully tailor the LED dimmer to the type of lighting you use, from LED filament to recessed downlights. Setting it up takes just a few minutes, but ensures that your lighting always does exactly what you want.

Switchable Dimming Mode: Trailing Edge & Leading Edge

Using the built-in slide switch, you can select between trailing edge (RC) and leading edge (RL) dimming modes. This makes the dimmer compatible with a wide range of dimmable LED lamps, including sensitive types. It allows for precise matching to the type of electrical load (resistive, capacitive, or inductive).

Compatible with Popular Cover Frames

Thanks to its universal fit, the dimmer can be combined with cover frames from leading brands such as:

• Berker by Hager
• Busch-Jaeger
• Gira
• JUNG
• Kopp
• Merten by Schneider
• Niko (with adapter)

Easy Installation – 2-Wire Connection

The LED dimmer works with standard 2-wire systems and does not require a neutral wire, making it ideal for upgrades in existing homes. Always refer to the included installation manual for proper and safe setup.

Important: Always turn off power at the fuse box before installation.

Safety & Certifications

This LED dimmer features automatic overload and overheat protection. It also complies with European standards:
IEC 60669-2-1, EN 55015, EN 61547, EN 61000-3-2, and EN 61000-3-3.

It is certified with the DEKRA safety mark, ensuring independent quality control and adherence to strict safety standards.

Package Contents

1× Rotary LED dimmer
4× Rotary knobs with D-shaped hole (4 and 6 mm)
1× Adapter ring for JUNG
2× Mounting screws (for JUNG or NIKO)
1× Nut for securing central cover plates (without ring)
1× Nut for securing central cover plates (with ring)
1× Mounting ring for Busch-Jaeger and NIKO