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Mechanical Hygrostat MFR 012
Features

Adjustable relative humidity


Change-over contact


High switching capacity


Easily accessible terminals


Clip fixing

Product Description

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.

Technical Data

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Technical Data

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.

Mounting options

Art.No.

Setting Range

Operating Voltage

01220.0-00 

35 to 95% RH 

20VAC/DC, 250VAC


Structure Chart

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Video

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