MFR012 MECHANICAL HYGROSTAT
- Adjustable relative humidity
- Change-over contact
- High switching capacity
- Clip fixing
- Easily accessible terminals
The MFR012 electro mechanical hygrostat is designed to control the relative humidity inside enclosures. When connected to an enclosure heater (dehumidifier), it will energize the heater at the humidity set point in order to raise the dew point. This helps prevent damage and malfunction of electronic components caused by condensation and corrosion.¹ The MFR 012 can also be used to control cooling fans, warning lights or other devices.
¹ The critical relative humidity level for most components is 65%. Above 65% RH, condensation can form and cause malfunctions
of electronic equipment. Long term, this can lead to corrosion and permanent damage of electronic components and systems.
Switch difference 4 %RH (± 3 % tolerance) – at 50 %RH permissible air velocity 15M/sec Contact type change-over contact Service life >100,000 cycles Min. Switching capapcity 2V AC/DC, 100mA Max. Switching capapcity 250VAC, 5(1)A DC 20W EMC acc. to EN 55014-1-2, EN 61000-3-2, EN 61000-3-3 Connection 3-pole terminal, clamping torque 0.5Nm max., rigid wire 2.5mm²stranded wire(with wire end ferrule) 1.5mm² Mounting clip for 35mm DIN rail, EN50022 Casing plastic according to UL94 V-0, light grey Dimensions 67 x 50 x 38mm Fitting position variable Operating/Storage temperature +32 to +140 °F (0 to +60 °C) / -4 to +176 °F (-20 to +80 °C) Protection type IP20 Weight approx. 60g Art. No. Setting range 01220.0-00 30 to 95% RH
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