• black icon of a bullhorn 30 years industry experience
  • black icon of three cubes Over 8,000 products in stock
  • Black icon of a clock Order by 16:00 and receive the next working day


Mechanical hygrostat - KFR 012


  • Preset for humidity (65 % rF or 50 % rF)
  • Compact
  • High breaking capacity
  • Simple mounting and quick installation

Product description

This mechanical hygrostat KFR 012 is preset at 65 % or 50 %. This makes it easier to install hygrostats. It can often be difficult to know which humidity is to be set on the hygrostat. If the hygrostat is set at a value that is too low, the heating fan runs too frequently and thus produces large energy losses, or if the hygrostat is set at a value that is too high, components in the cabinet can be damaged. For the sake of simplicity, STEGO has developed two different models.

65 % humidity (rF) – for most cabinets with normal humidity

50 % humidity (rF) – for cabinets with components that are sensitive to high humidity. 

Part numbers

Parts Price Control range humidity from Control range humidity to
50 % RF 50 % RF
65 % RF 65 % RF


Mechanical hygrostat KFR012

KFR 012 Hygrostat, Preset 50% RH, normally open

Technical data

General data

Control range humidity from 50 % RF
Control range humidity to 50 % RF
Hysteresis humidity 4% RH
Mounting Clip on, DIN rail
Contact type 1 x N/O
Colour Light grey

Rated operating conditions

Breaking capacity 250VAC, 5 (0.2) A
Contact resistance <10 mΩ
Connection type 2-pole terminal for 2.5mm²
Operational Temperature 0 °C ... +60°C
Storage temperature -20°C ... +80°C
Life span > 50,000 cycles
Humidity storage <90% RH


Height 60 mm
Depth 33 mm
Weight 0,04 kg
Material of body Plastic

Safety & approvals

IP class IP20
Approvals CE, UL, VDE
Flammability class UL94-V0
EMC EN 55014-1-2, EN 61000-3-2, EN 61000-3-3


Contact us

If you need any help, you can contact us in one of the following ways:

0116 284 9900

Send an e-mail

Use live chat