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Mechanical Hygrostat MFR 012

Mechanical Hygrostat MFR 012
  • Adjustable relative humidity
  • Change-over contact
  • High switching capacity
  • Easily accessible terminals
  • Clip fixing

The electromechanical hygrostat MRF 012 is designed to control enclosure heaters so that the dew point is raised when a critical relative humidity of 65% is exceeded. In this way condensation and corrosion is effectively prevented.

Technical Data

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Switch difference* 4% RH (±3% tolerance)
Permissible air velocity 15m/sec
Contact type change-over contact
Contact resistance < 10mOhm
Service life > 100 000 cycles
Min. switching capacity 20V AC/DC 100 mA
Max. switching capacity 250 VAC, 5 (1) A
  DC 20W
Connection 3-pole terminal for 2.5mm², clamping torque 0.5Nm max.: rigid wire 2.5mm², stranded wire (with wire end ferrule) 1.5mm²
Mounting clip for 35mm DIN rail, EN60715
Casing plastic according to UL94 V-0, light grey
Dimensions 67 x 50 x 38mm
Weight approx. 60g
Fitting position variable
Operarting/Storage temperature 0 to +60°C (+32 to +140°F) / -20 to +80°C (-4 to +176°F)
Protection type IP20
Approvals VDE and UL submitted

*at 50% RH

Art. No. Setting range
01220.0-00 35 to 95% RH

Technical drawing

Mechanical Hygrostat MFR 012 Dawing Mechanical Hygrostat MFR 012 Dawing Mechanical Hygrostat MFR 012 Dawing Mechanical Hygrostat MFR 012 Dawing Mechanical Hygrostat MFR 012 Dawing
Mechanical Hygrostat MFR 012 Dawing Mechanical Hygrostat MFR 012 Dawing Mechanical Hygrostat MFR 012 Dawing Mechanical Hygrostat MFR 012 Dawing Mechanical Hygrostat MFR 012 Dawing
Mechanical Hygrostat MFR 012 Dawing Mechanical Hygrostat MFR 012 Dawing Mechanical Hygrostat MFR 012 Dawing Mechanical Hygrostat MFR 012 Dawing Mechanical Hygrostat MFR 012 Dawing
Mechanical Hygrostat MFR 012 Dawing Mechanical Hygrostat MFR 012 Dawing Mechanical Hygrostat MFR 012 Dawing Mechanical Hygrostat MFR 012 Dawing Mechanical Hygrostat MFR 012 Dawing
Mechanical Hygrostat MFR 012

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