> Adjustable relative humidity
> Change-over contact
> High switching capacity
> Easily accessible terminals
> Clip fixing
The electromechanical hygrostat 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 in enclosures with electric/electronic components is effectively prevented.
Technical Data
MFR 012 | |
Switch difference¹ | +/-5% RH |
Permissible air velocity | 15m/sec. |
Contact type | change-over contact |
Service life | > 50,000 cycles |
Min. switching capacity | 20VAC / DC 100mA |
Max. switching capacity | 250VAC, 5A / DC 20W |
Connection | 3-pole terminal for 2.5mm², clamping torque 0.5Nm max.: rigid wire 2.5mm² (AWG 14); stranded wire² 1.5mm² (AWG 16) |
Mounting | clip for 35mm DIN rail, EN 60715 |
Casing | plastic according to UL 94V-0, light grey |
Dimensions | 67 x 50 x 38mm |
Weight | approx. 60g |
Fitting position | vertical |
Operating/Storage temperature | 0 to +60°C (+32 to +140°F) / -40 to +60°C (-40 to +140°F) |
Operating/Storage humidity | max. 95% RH (non-condensing) |
Protection type | IP20 |
¹ at 50% RH
² When connecting with stranded wires, wire end ferrules must be used.
Examples of connection
Art. No. | Setting Range | Operating Voltage |
01220.0-00 | 35 to 95% RH | 20VAC/DC, 250VAC |
01220.0-00-F | 35 to 95% RH | 20VAC/DC, 250VAC |
