YPSILON Hannes Wettstein, 1999

YPSILON is a discrete but energy-saving solution to illuminate the walls of rooms and thus visually enlarge it. The plug-in lamp also solves the problem of dark ceilings where they do not reflect light. Modern electronics and its stylish finishes, along with the distinctive design, ensure high-quality illumination and a long operating life.

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Small rooms can be subjectively enlarged by flooding light over the wall. Ypsilon uses this effect and illuminates a room or wall surface both vertically and broadly. In this case the reduced light housing is secondary and only develops its effect when switched on. The design by Hannes Wettstein is in the form of a “Y” to give Ypsilon its light and unobtrusive character.
The built-in dimmer enables the light to be regulated from bright room light to cozy mood light. Ypsilon is energy saving and can be rotated through 270°. High-quality illumination electronics generate flicker-free light and ensure that lamps and operating equipment have a long life.
Ypsilon is also available as an LED version. No changes have been made to the design and the lamp can be turned and dimmed as usual. The advantages are obvious:


High energy efficiency: Ypsilon-LED is 40% more energy efficient compared to the fluorescent version, while the lighting quantity remains the same.


Minimum maintenance: The lifecycle of the LED unit is at least 50,000 hours, which is more than 30 years when used for four hours a day.


Continuous colour temperature: When the light is dimmed, the colour temperature remains the same (2700 Kelvin). There are no colour changes, such as those known from fluorescence technology.


Ypsilon is made of the finest aluminum and the finely anodized finish in four different colors brings out the unique Y-form depending on the play of light. While the natural aluminum and champagne colors contribute to the restrained aesthetics, the red and black models enhance the surroundings and are contrasting points to any interior design.

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Range / Details

15 Products

TypMains plugSpec sheetWish list
YPS04-11-8027-TDSwiss plug type JPDFWish list
YPS04-12-8027-TDSwiss plug type JPDFWish list
YPS04-13-8027-TDSwiss plug type JPDFWish list
YPS04-14-8027-TDSwiss plug type JPDFWish list
YPS04-15-8027-TDSwiss plug type JPDFWish list
YPS04-16-8027-TDSchuko plug type E+FPDFWish list
YPS04-17-8027-TDSchuko plug type E+FPDFWish list
YPS04-18-8027-TDSchuko plug type E+FPDFWish list
YPS04-19-8027-TDSchuko plug type E+FPDFWish list
YPS04-20-8027-TDSchuko plug type E+FPDFWish list
YPS04-21-8027-TDUK plug type GPDFWish list
YPS04-22-8027-TDUK plug type GPDFWish list
YPS04-23-8027-TDUK plug type GPDFWish list
YPS04-24-8027-TDUK plug type GPDFWish list
YPS04-25-8027-TDUK plug type GPDFWish list

CAD data
YPSILONWRLDWG3DSDXF
Assembly instructions
YPSILON-03/-04 (pdf, 820.4 KB)
Photometric data
YPSILON (zip, 26.1 KB)

High resolution pictures
Printing energy labels