- Adjustable relative humidity range
- High switching capacity
- DIN rail mountable
The MFR 012 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 MFR 012 can also be used to control cooling fans, warning lights or other devices.
*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.
Technical Data
| Switching difference (hysteresis) |
Approx. 4% RH @ 50% relative humidity |
| Permissible air velocity |
50 ft/sec (15 m/sec) |
| Maximum switching voltage* |
250 VAC |
| Contact type |
Change-over contact |
| Contact resistance |
< 10mOhm |
| Service life |
100,000 cycles |
| Minimum switching capacity |
100 mA @ 20 VAC/DC |
| Maximum switching capacity |
5A @ 230 VAC (resistive load) |
| |
1.0A @ 230 VAC (inductive load at cos phi = 0.8) |
| |
DC 20 W |
| 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) |
| Mounting |
Clip for 35mm DIN rail (EN50022) |
| Dimensions |
2.64 x 1.97 x 1.5" (67 x 50 x 38 mm) |
| Housing |
Plastic, UL 94V-0 |
| Weight |
2 oz. (60 g) |
| Operating temperature |
32 to 140 °F (0 to 60 °C) |
| Storage temperature |
-4 to 176 °F (-20 to 80 °C) |
| Protection type |
IP20 |
| *250 V should only be switched in a non-condensing environment! |
|
| Part. No. |
Adjustment range |
| 01220.0-00 |
35 - 95% RH (+/- 3.0%) relative humidity |
