Mechanical hygrostat
MFR 012
The hygrostat is used to prevent condensate and regulates heating and fans. From a critical relative air humidity of 65 %, the temperature is increased so that the dew point is raised.
- Adjustable relative air humidity
- Changeover contact (heating or cooling)
- High switching capacity
- Clip mounting
Overview technical data
| Device name | Mechanical hygrostat |
| Device type | Hygrostat |
| Series | MFR 012 |
| Article number | 01220.0-00 |
| Follow-up article | 01250.0-00 |
| Setting range | 35 % RH - 95 % RH |
| Contact type | Snap-action contact |
| Protection type | IP20 |
| Casing | Plastic to UL94 V-0, light grey |
| AC/DC | AC DC |
| Operating voltage tolerance maximum | AC 250 V (VDE), AC 120 V (UL) V |
| Inrush current maximum | 16 A |
| Inrush current duration | 10 s |
| Switching capacity | AC 5 A DC 20 W |
| Switching current ohmic | 5 A |
| Reference voltage ohmic maximum | 250 VAC |
| Reference voltage 2 ohmic maximum | 120 VAC |
| Switching current dc ohmic | 0.6 A |
| Reference voltage dc ohmic maximum | 30 VDC |
| Reference voltage minimum | 20 V |
| Switching current | 0.1 A |
| Service life | >50000 cycles |
| Switching differential | 4 % RH |
| Switching differential tolerance | ± 3 % RH |
| Operating temperature | 0 °C - 60 °C |
| Operating humidity | ≤95 % RH |
| Storage humidity | ≤95 % RH |
| Storage temperature | -40 °C - 60 °C |
| Torque | 0.5 Nmmax. |
| Connection | 3-pole clamp, torque 0.5 Nm max: Rigid wire cable 2.5 mm² (AWG 14) Stranded wire² 1.5 mm² (AWG 16) |
| Design | Changer |
| Mounting | Clip for 35 mm DIN rail, EN 60715 |
| Height | 67 mm |
| Width | 50 mm |
| Depth | 38 mm |
| Weight | 60 g |
| Note | Switching differential related to 50 % rH. Wire end ferrules must be used for connections with stranded wires. |
| CCC | CQC |
Heating
Cooling
Regulating
Lighting
