Ballasts – technology that reliably controls light

When light doesn't simply shine, but is controlled

Ballasts are the invisible helpers of every professional lighting system: They ensure that luminaires operate optimally, current and voltage values ​​are correct, light sources are reliably ignited, and electrical loads remain under control. Whether for fluorescent tubes, discharge lamps, or modern LED systems – high-quality ballasts are essential for stable operation, a long service life, and efficient performance. At Licht-Kraus, you'll find a selection of first-class ballasts and control gear from leading manufacturers, combining technology, quality, and safety.

This text provides important information about ballasts: function and significance, types of technology and their differences, materials and workmanship, applications and planning, energy and operational advantages, as well as maintenance and lifespan. A comprehensive FAQ section with frequently asked questions is provided at the end.

Function & Importance of Ballasts

A ballast performs key tasks in the operation of luminaires. It not only switches the light on, but also regulates current, voltage and ignition, and protects the light source and the system from overload.

Tasks at a glance

• Ensuring the ignition or starting voltage for fluorescent or discharge lamps

• Limiting the current during operation to prevent lamps from being overloaded.

• Adjusting the operating voltage or current to the lamp

• Support for dimming operation or control in modern systems

• Increased lifespan and improved light quality

Without a correctly selected ballast, there is a risk of reduced light output, early failures or even failure of entire lighting modules.

Technology types & selection criteria

Ballasts are available in various designs and technologies – depending on the application and lamp type. A conscious selection is crucial for performance and operation.

Types of technology

• Conventional ballasts (CCG): classic chokes or coils, simple function

• Electronic ballasts (ECG): modern technology with high efficiency, lower losses and often dimmable

• LED drivers or electronic control gear for LED systems: ensure stable current and optimal yield.

• Special equipment for discharge lamps or high-power LED installations

When choosing, attention should be paid to performance range, compatibility with the lamp, dimmability, interfaces and location of use.

Material quality & workmanship

Since ballasts are an integral part of the lighting system – often located inside the luminaire or in the distribution box – the quality of the materials and workmanship is of paramount importance. Good workmanship ensures operational reliability and a long service life.

Quality features

• Housing made of metal or high-quality plastic with sufficient heat dissipation

• good ventilation or cooling, stable connection and strain relief

• Clearly labeled connections, protection rating according to the place of use

• tested electronics, safety devices (overcurrent, overvoltage) and standards compliance

A high-quality ballast is not evident through appearance, but through performance: operational reliability, low failure rates, and good light output.

Areas of application & planning

Ballasts are used in a wide variety of lighting applications – from residential to commercial buildings. Planning is essential in this process.

Areas of application

• Office and administrative spaces with grid lights and fluorescent lamps

• Shopfitting or exhibitions with high-performance lamps or LED systems

• Outdoor and industrial lighting with discharge lamps or LED modules with drivers

• Modernization of existing luminaires with retrofit solutions

Planning notes

• Determine the exact lamp type and wattage of the light fixture.

• Check the ballast's specifications (wattage, output current, input voltage) for compatibility.

• Consider dimming capability, control and networking.

• Choose the installation location carefully: ventilation, temperature, access for maintenance

• Operational safety: correct load, safeguarding and protection against moisture

Good planning ensures that lighting works – reliably, efficiently and in the long term.

Energy and operational advantages

Modern ballasts do more than just "switch on". They contribute to energy savings, improved light output and extended lifespan.

Advantages in the workplace

• Electronic ballast with higher efficiency and lower losses

• More stable light output, less flickering or stroboscopic effects

• The ability to control energy consumption (dimming, presence detection) reduces energy consumption.

• Lower heat generation and therefore lower stress on the light fixture.

• Extending the lifespan of lamps and modules

Those who cut corners on operational technology often don't save in the long run – good upstream technology is key to efficiency.

Care & Lifespan

Although ballasts are rarely in sight, they still require careful handling. Maintenance and proper installation ensure reliable operation.

Care instructions

• Regular visual inspection for temperature development and dust accumulation

• Check connections – screws can loosen.

• Pay attention to the installation environment: adequate ventilation, no blockage of ventilation paths.

• Replace the product promptly if there is a drop in performance or if noises occur.

• Keep documentation – to ensure maintenance and traceability.

These measures will ensure your lighting technology remains efficient in the long term.

Systems thinking & integration

Ballasts are part of a comprehensive lighting system – not isolated components. Thinking holistically pays off in the long run.

Design benefits

• Control technology integration for lighting zones and scene control

• Combination of luminaires, sensors, and control units for customized lighting applications

• Technology in the background – lighting effect in the foreground

• Planning with a view to expandability and future-proofing

A good ballast can be integrated today – and expanded tomorrow.

FAQ – Ballasts

1. What is a ballast?
An electrical control device that regulates, ignites, and protects the power and voltage supply of a lamp.

2. What types of ballasts are there?
Conventional (KVG), electronic (EVG) and LED drivers – depending on the type of light source and application.

3. Is there anything I need to consider when replacing a ballast?
Yes – compatibility with the lamp, power specifications, connection type, protection class and, if applicable, control options.

4. Can a ballast be dimmable?
Yes – many electronic ballasts or LED drivers are designed for this. When buying, make sure they are "dimmable" and compatible with the technology.

5. What advantages does an EVG offer compared to a KVG?
Higher efficiency, lower losses, better light quality, often flicker-free and better controllable.

6. How long does a good ballast last?
Typically many years – with proper installation, sufficient cooling and correct dimensioning.

7. Where should the ballast be mounted?
Installation in a well-ventilated area, protected from moisture, with good access for maintenance.

8. Do LED lights require a ballast?
Yes – if they are used in systems that previously used discharge lamps and where voltage/current needs to be regulated.

9. What happens without a proper ballast?
Light output may be weak, the lamp may flicker, lifespan decreases, and operation may become unsafe.

10. What should I pay particular attention to when buying?
Technical specifications (power, voltage, current), dimmability, compatibility with light fixture, quality, manufacturer certification.