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Blauberg EVH 125-1.2-1

Electric duct heater for heat exchanger freeze protection.
EAN codeEAN4058448056611
  • Description
  • Characteristics
  • Capacity diagram
  • Downloads
  • Overall dimensions
  • Designation key
  • Compatibility chart

Heat exchanger freeze protection by means of preheating of the intake air. Maintains the duct air temperature at a point that prevents the heat exchanger freezing. Compatible with Ø 125 up to 200 mm air ducts.


Equipped with a power cable. The signal cable for connection to the controller of the air handling unit. Equipped with a triac power regulator. Regulation is carried out via switching-on and switching-off the full load. Load commutation is carried out by the semiconductor device (triac). The switching unit has no wearing mechanical elements. Equipped with overheat thermostats:

  • main protection with automatic restart at +50 °С;
  • emergency protection with manual restart at +90 °С.

The casing is internally filled with 20 mm layer of non-flammable mineral wool. The casing and the junction box are made of galvanized steel. Heating elements are made of stainless steel. Airtight connection to air ducts due to rubber seals.


Fixation to round air ducts by means of clamps (included in the delivery). In case of horizontal mounting position the control box cover must be directed upwards only. Permitted deviation up to 90°. The control box cover may not be positioned downwards!

Parameter EVH 125-1.2-1 Measurement unit
Power 1200 W
Total unit current 5.2 A
Minimum air capacity 90 m³/h
Insulating material incombustible mineral wool, 20 mm mm
Weight 2.1 kg
Casing material galvanized steel -
Air duct for round air ducts -
Connection diameter 125 mm
Capacity diagram
Capacity diagram
  • Selection method:
  • Air capacity:
  • Pressure:
Operating point
  • Air capacity: --
  • Pressure: ---
Documents archieve
Documents archieve
EVH (round) - data sheet (pdf 839.46Kb)
EVH (round) - image (png 583.53Kb)
EVH (round) - user's manual (pdf 1.31Mb)
Overall dimensions
Overall dimensions

Model Overall dimensions [mm]
D B H L L1
EVH 125-1.2-1 124 155 251 306 190
Designation key
Designation key
Serie Connected air duct diameter [mm]   Heater power [kW]   Number of phases Compatability with automation
EVH 125; 150; 160; 200 0.6; 0.8; 1.2; 1.7; 2.0 1: single-phase _: compatible with S11 automation
S21: compatible with S21 automation
Compatibility chart
Compatibility chart
Heater model Unit model
EVH 125 KOMFORT unit with a Ø 125 mm spigot and S11 automation
EVH 125 S21 KOMFORT unit with a Ø 125 mm spigot and S21 automation