DTS 3661C/DTS 3681C

Cooling units 7200 W
  • particularly suitable for the food industry and outdoor applications (-40°C)
  • high protection system IP 56, maintenance-free
  • maintains a UL tested NEMA type 3R/4 seal against the enclosure
  • NEMA 3R/4 (DTS 3661C) unit with powder coated steel cover
  • NEMA 4/4X (DTS 3681C) unit with stainless steel cover
  • large distance between intake and exhaust vents, safe circulation within the electrical enclosure due to long passage of air, therefore hot spots are eliminated
  • integrated 900W enclosure fan heater
  • integrated condensate evaporation system

operating temperature

side mounting



large distance in /out

Stainless steel

UL approved

Technical data

DataDTS 3661C (NEMA 3R/4) / DTS 3681C (NEMA 4/4X)
Rated voltage ±10 %AC 50/60 Hz
400 / 460 V 3~
Cooling capacity
according to EN 14511
A35/A357200 W
A35/A503800 W
Ambient temperatureSC-40… +55 °C / -40 … +131 °F
Degrees of protectionaccording to NEMA3R/4towards the electrical enclosure
if used as intended by the manufacturer
Condensate managementintegrated condensate evaporation system with safety overflow

Further technical details and dimensions can be found in the download section on this page under product sheet.


Description Language Type Size Download

Product sheet

  • English
pdf 410 KB Download

Data sheet DTS 3661C

  • English
pdf 2.0 MB Download

Data sheet DTS 3681C

  • English
pdf 1.9 MB Download


  • English
zip 4.0 MB Download

3D model (STEP)

  • English
zip 18 MB Download

Cut-out (DXF)

  • English
dxf 120 KB Download

UL listed certificate

  • English
pdf 190 KB Download

CE Declaration of Conformity

  • English
pdf 190 KB Download

UKCA Declaration of Conformity

  • English
pdf 160 KB Download

Further software tools for digital product integration into your planning and documentation (such as Eplan macros) can be found at MyPfannenberg.

Ordering details

Ordering detailsDTS 3661CDTS 3681C
TypeRated voltage400 / 460 V AC
StandardArticle number1338403637513384036178