DTS 3661/3681

Cooling units 5795 W
  • particularly suitable for the food industry and outdoor applications
  • high protection system IP 56, maintenance-free
  • maintains a UL tested NEMA type 3R/4 seal against the enclosure
  • NEMA 3R/4 (DTS 3661) unit with powder coated steel cover
  • NEMA 4/4X (DTS 3681) unit with stainless steel cover
  • condenser with 3 mm fin spacing, highly effective protection against strongly contaminated ambient air
  • 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 condensate evaporation system

side mounting



large distance in /out

Stainless steel

UL approved

EurAsian Conformity

Technical data

DataDTS 3661 (NEMA 3R/4)DTS 3681 (NEMA 4/4X)
Rated voltage ±10 %AC 50/60 Hz
400 / 460 V 3~
Cooling capacity
according to EN 14511
A35/A355795 W
A35/A504678 W
Ampient temperatureSC0 … +55 °C / +32 … +131 °F
LAP–40 … +55 °C / –40 … +131 °F
Degrees of protection
according to NEMA
3R/4towards the electrical enclosure
if used as intended by the manufacturer
4/4Xtowards 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 500 KB Download

Operating manual

  • English
pdf 5.0 MB Download
  • German
pdf 4.9 MB Download

Data sheet 230V

  • English
  • German
  • French
pdf 250 KB Download

Data sheet 400V

  • English
  • German
  • French
pdf 780 KB Download

3D-model DTS 3661 (STEP)

  • English
zip 33 MB Download

3D-model DTS 3681 (STEP)

  • English
zip 33 MB Download

Cut-out DTS 3661 (DXF)

  • English
zip 18 KB Download

Cut-out DTS 3681 (DXF)

  • English
zip 18 KB Download

EAC certificate

  • Russian
pdf 440 KB Download

Declaration of Conformity

  • English
  • German
pdf 77 KB Download

Ordering details

Ordering detailsDTS 3661DTS 3681
TypeRated voltage400/460 V AC
Standard ControllerArticle number1338393635513383936158

Product Benefits

  1. 1

    Compact design

    Robust cooling unit in compact design for smaller cabinets or to cool hot spots.

  2. 2

    Stainless steel

    In stainless steel model with IP 56 particularly suitable for outdoor applications or for the food and beverage industry.

  3. 3

    Robust design

    using tested and energy efficient components.

  4. 4


    with large fin spacing enables very long maintenance intervals even without additional Nano coating.

  5. 5

    Integrated condensate evaporation

    no puddles of water under the device for increased operation safety.