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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
NT 84-F | |
Operating Voltage | All AC/DC Voltage |
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 UL94 V-0, light grey |
Dimensions | 67×50×38mm |
Weight | approx. 60g |
Fitting position | variable |
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.
Art. No. | Setting Range | Operating Voltage |
84HF | 35 to 95% RH | 20VAC/DC, 250VAC |
