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  • Parameters

Mechanical Hygrostat

MFR 012
Switch difference¹ +/-5% RH
Permissible air velocity 15m/sec.
Contact type change-over contact
Service life >50,000 cycles
Min. switching capacity 20VAC/DC 100mA
Max. switching capacity 120VAC to 250VAC,5A
Connection 3-pole terminal for 2.5mm², clamping torque 0.5Nm max.:
rigid wire 2.5mm²(AWG 14); stranded wire² 1.5mm²(AWG 16)
Mounting clip for 35mm DIN rail, EN 60715
Casing plastic according to UL94 V-0, light grey
Dimensions 67x50x38mm
Weight approx.60g
Fitting position variable
Operating/Storage temperature 0 to+60℃(+32 to +140℉)/-40 to+60℃(-40to+140℉)
Operating/Storage humidity max.95% RH(non-condensing)
Protection type IP20

¹ at 50% RH

² When connecting with stranded wires, wire end ferrules must be used.

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

20VAC/DC, 250VAC

  • Features

> Adjustable relative humidity

> Change-over contact

> High switching capacity

> Easily accessible terminals

> Clip fixing

  • Structure Chart

Mechanical Hygrostat

  • Certification
  • Application

The electromechanical hygrostat 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 in enclosures with electric/electronic components is effectively prevented.

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