What Is a Track Spotlight and How to Choose One? Beam Angle, Track Type and Wattage
Short answer
A track spotlight is an LED spotlight that can be slid along and aimed on an electrical track mounted on the ceiling. Four decisions are key: an adaptor compatible with the track (single- or three-phase), a beam angle suited to the task (12°–20° for a single product, 34° for shelves, 44°–60° for areas), enough power and luminous flux for the space, and CRI 90 or higher so that colours look right.
In spaces whose layout changes often, such as shops, showrooms, galleries and museums, the lighting must be able to change too. Track spotlights provide this flexibility: the track is mounted on the ceiling once, and the spotlights are slid along it, rotated, added or removed. A well-chosen track system lets a space adapt to different layouts for years.
Track type: single-phase or three-phase?
| Single-phase track | Three-phase track | |
|---|---|---|
| Number of circuits | 1 | 3 |
| Control | All spotlights together | Spotlights can be split into three groups |
| Use | Small shops, homes, offices | Large shops, showrooms, galleries |
| Adaptor | Single-phase adaptor | Three-phase (phase-selectable) adaptor |
The spotlight's adaptor must be compatible with the existing track. Our Focus series, for example, comes with a universal adaptor compatible with single- and three-phase track systems, as stated in its datasheet.
Beam angle: the most important decision
Two spotlights of the same wattage give very different results depending on the beam angle: a narrow beam concentrates the light in a small spot and creates high contrast, while a wide beam spreads it and gives soft illumination.
| Beam angle | Use |
|---|---|
| 12° (very narrow) | A single product, jewellery, small objects, accents from high ceilings |
| 20° (narrow) | Paintings, mannequins, products inside displays |
| 34° (medium) | Shelves, stands, tables |
| 44° (wide) | Product groups, wall sections |
| 60° (very wide) | General area lighting, low ceilings |
These five angles are the reflector options in the Focus series datasheet; many manufacturers offer similar steps.
Power, luminous flux and efficacy
Compare track spotlights by luminous flux (lumens) and efficacy (lm/W), not by wattage. In the Focus series, for example, the 30 W model gives 2,801–3,426 lm and the 41 W model 3,890–4,830 lm; the range depends on the colour temperature and the CRI option (Ra > 80 or Ra > 90). The CRI 90 option shows colours more accurately but gives slightly fewer lumens at the same power; in a shop this difference is usually worth it.
Colour temperature and CRI
- Clothing, cosmetics: 3000K–3500K, CRI 90+.
- Jewellery: 2700K–3000K for gold, 4000K for diamonds and silver, CRI 90+.
- Food: 2700K–3000K; options with special spectra and high R9 for products such as meat, bread and fruit.
- Galleries and museums: 3000K–4000K, with values close to CRI 95 preferred.
Layout rules
- When lighting an object on a wall, aim the spotlight at about 30°; a perpendicular angle makes the object look flat, a very shallow one gives long shadows.
- Do not place the track too close to the wall: the spotlight will hit it at a steep angle. The distance to the wall is set according to the ceiling height and the position of the object.
- Do not point spotlights towards the customer's eye level; use anti-glare snoots or honeycomb louvres if necessary.
- Do not try to provide general lighting with track spotlights alone; use them together with recessed or linear luminaires for an even base level of light.
Conclusion
A good track spotlight system combines the right track type, a beam angle suited to the task, enough luminous flux and high CRI. You can explore our track spotlight models, and if you want a layer-by-layer plan for your shop, see our retail lighting design page.
Frequently Asked Questions
What is the difference between single-phase and three-phase track?
On single-phase track all spotlights are fed from one circuit and switch on and off together. On three-phase track the spotlights can be connected to three separate circuits via their adaptors, so different groups on the same track can be controlled separately.
Which beam angle should a track spotlight have?
A narrow 12°–20° beam to accent a single product or painting, a medium beam of about 34° for shelves and displays, and a wide 44°–60° beam to light larger areas.
How many watts should a track spotlight be?
It depends on the ceiling height, target illuminance and beam angle. For window and shelf accents under ceilings of about 3 metres, 20–30 W models are preferred; for high ceilings and wide beams, 30–40 W and above. The exact value is determined by calculation.
What does a honeycomb louvre on a track spotlight do?
It reduces glare by preventing a direct view of the light source; it is particularly recommended at angles close to the customer's eye level.