Adjustable relative humidity Change-over contact High switching capacity Easily accessible terminals Clip fixing Mechanical Hygrostat MFR 012Adjustable relative humidityChange-over contactHigh switching capacityEasily accessible terminalsClip 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

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