Series index
Sampo's magnetic track range splits into two voltage families. The high-voltage pair, M25 and M35, runs on 95–260V with no external transformer. The 48V family covers a 20mm system, a 26mm ultra-thin profile, an ultra-thin light-strip (belt) system and a semi-flexible track. Each one has its own fixture list, so the series comes first and the heads second.
If you aren't sure where to start, the selector below asks two questions and points you to one of four core series. The decision table under it gives the same answers in plain text.
| Q1 voltage | Q2 room | Series | Reason |
|---|---|---|---|
| Mains-direct is fine | Home or light-duty room | M25 | The 25mm slot carries smaller fixtures and runs on 95–260V without an external transformer. It comes in smart WiFi and non-smart EMC variants, which suits homes and light-duty rooms. |
| Mains-direct is fine | Shop, museum or office | M35 | The 35mm slot takes larger fixtures for shops, museums and offices. It's still mains-direct, and the 4-wire smart build is the common choice in commercial rooms. |
| Mains-direct is fine | Low ceiling or no main light | 48V 26mm ultra-thin | The ultra-thin magnetic profiles are in the 48V family, so a truly slim recessed line means stepping down to 48V. If mains-direct is non-negotiable, M25 is the slimmer of the two high-voltage tracks. |
| I'd rather run 48V | Home or light-duty room | 48V 20mm | 48V lowers touch risk, and the regular 20mm profile keeps a standard ceiling simple, surface-mounted or recessed. |
| I'd rather run 48V | Shop, museum or office | 48V 20mm | For larger rooms on 48V, the 20mm system is the starting point. Tell us the heads you need; we'll confirm which fixtures fit this profile before quoting. If the brief is mainly big display heads on long runs, compare it with M35 too. |
| I'd rather run 48V | Low ceiling or no main light | 48V 26mm ultra-thin | The ultra-thin profile, with right-angle and rounded corners, is built for low ceilings and schemes with no main light. |
Also worth a look: the 48V ultra-thin light-strip (belt) system for continuous lines of light, and the 48V semi-flexible track where the run has to follow a curve. Neither is a selector outcome, because both depend on the drawing.
All six series
The cards list what's verified for each series today. Wattage, beam and colour figures belong to individual fixtures, not to the track, so we quote them against your fixture list instead of printing a single number here.
M25 is the compact mains track. It suits living rooms, bedrooms and small studios where the heads should stay discreet and nobody wants a driver box hidden in the ceiling.
M35 is the wider mains track. The bigger slot carries larger heads, which is what display walls, gallery rooms and open offices usually ask for.
The 20mm system is the everyday 48V track. It's the one to start from when low voltage is the priority and the ceiling has no unusual height limits.
The ultra-thin profile is built to almost vanish into the ceiling. Right-angle and rounded corners let the line wrap a room, which is how no-main-light designs are usually drawn.
The belt system is chosen when the line of light itself is the design, rather than a row of separate heads.
Semi-flexible track bends to follow a curved ceiling feature where a straight run and a corner joint would look clumsy.
Comparison
Read it left to right: slot and voltage decide what the ceiling has to hold and power, and the role column tells you where each one usually ends up.
| Series | Slot / profile | Voltage | Typical role | Distinguishing point |
|---|---|---|---|---|
| M25 | 25mm | 95–260V | Homes, light-duty rooms | Smaller heads; smart WiFi or EMC |
| M35 | 35mm | 95–260V | Shops, museums, offices | Larger heads; 4-wire smart common |
| 48V 20mm | 20mm | 48V | Standard ceilings, lower touch risk | Regular low-voltage profile |
| 48V 26mm ultra-thin | 26mm | 48V | Low ceilings, no main light | Right-angle and rounded corners |
| 48V belt | strip | 48V | Continuous lines of light | Ultra-thin belt |
| 48V semi-flexible | flexible | 48V | Curved runs | Follows a bend |
Before you enquire
A useful first message is short. It doesn't need a full lighting design, only enough for us to check the series and the profile against the space.
Next step
A plan or a phone photo of the ceiling, the rough run lengths and the voltage you prefer are enough to start. We reply with a suggested series, the profile and the fixture families that fit.