Physical Specifications
Housing
Dimensions (diameter x height)
Weight
Colour
Fire load
Mounting
Environment and safety regulations
Degree of pollution (according to IEC 60664-1)
Overvoltage category (according to IEC 60664-1)
Protection class (to EN 60529)
Electrical Safety
Bus
Devices covers
Electromagnetic compatibility
Environmental specifications
Climatic withstand capability
Ambient temperature in operation
Storage temperature
Relative humidity (non-condensing)
Reliability
Failure rate
Markings
CE marking
Siemens AG
Building Technologies Division
Control Products and Systems
P.O. Box 10 09 53, D-93009 Regensburg
plastic
: 88 mm x 63 mm
approx. 65 g
Titanium white (similar RAL 9010)
approx. 2 MJ
In wall box , ceiling cutout or into surface mounting
housing
2
III
IP20
Safety extra low voltage SELV DC 24 V
EN 50428
complies with EN 50428
EN 50090-2-2
-5°C...+45°C
-20°C...+70°C
5 % to 93 %
UP 255D21: 250 fit at 40°C
UP 258E22: 308 fit at 40°C
UP 258D12: 308 fit at 40°C
KNX EIB
Complies with the EMC regulations (residential and
functional buildings),
low voltage regulations
UP 258E22, UP 258D12, UP 255D21
ã Siemens AG 2015
Subject to change
Update: http://www.siemens.com/gamma-td
11 / 12
January 2015