The MFR012 is designed to control the
relative air humidity inside of enclosures.
When connected to an enclosure heater,
(de-humidifier), it will turn the heater on at
the set humidity level in order to raise the
dew point. This helps prevent damage and
malfunction of electronic components
caused by condensation and corrosion. The
MFR012 can also be used to control cooling
fans, warning lights or other devices.
SPECIFICATIONS Adjustment Range: 35 to 95% (±3.0%) relative humidity Switching Difference (Hysteresis): Approx. 4% RH @ 50% relative humidity Permissible Air Velocity: 50 ft/sec (15 m/s) Maximum Switching Voltage: 250 Vac Attention: 250 V should only be switched in a non-condensing environment Contact Type: Change-over contact Contact Resistance: <10 mΩ Service Life: 100,000 cycles Minimum Switching Capacity: 100 mA @ AC/DC 20 V Maximum Switching Capacity: 5A @ AC 230V (resistive load), 1.0A @ AC 230V (inductive load at cos j = 0.8); DC 20W EMI/EMC Compliance: EN 55014-1-2, EN 61000-3-2, EN 61000-3-3 Connection: 3-pole terminal, 3 x AWG 14 max [2.5 mm2 (0.1 in2)] Mounting: Clip for 35mm (1.4") DIN rail (EN 50022) Dimensions: 67H x 50W x 38 mmD (2.64 x 1.97 x 1.5") Housing: Clip for 35mm DIN rail (EN 50022) Weight: 60g (2oz) Operating Temperature: 0 to 60°C (32 to 140°F) Storage Temperature: -20 to 80°C (-4 to 176°F) Protection Type: NEMA 2 (IP20) Application Examples: • Electrical and Electronic Enclosures • Telecommunication Systems • Display Panels • Ticket Dispensers • Automatic Teller Machines (ATM’s) • Access and Parking Control Systems Note: The critical relative humidity for most components is 65%. Above 65% RH, condensation can cause malfunction of electronic equipment. Long-term, this can lead to corrosion and permanent damage of electronic components and systems.
† All dollar amounts on this site are shown in US currency.
Note: Comes with complete operator’s manual. Ordering Example: (1) MFR0122 Mechanical hygrostat, $83.00,
Keywords:Mechanical Hygrostat, humidistat, humidity control