Language
Adjustable and pre-set relative humidity
Status indicator (LED)
High switching capacity
Clip fxing
Temperature-compensated
The electronic hygrostat senses the relative humidity in an enclosure with electric/electronic components and turns on a heater at the set point, helping prevent the formation of condensation in the enclosure. The LED integrated in the adjustment knob is lit when the connected heater is in operation.
Technical Data
NT 77-M | |
Switch difference | 5% RH (±3% RH tolerance) at +25℃ (+77℉), 50% RH |
Reaction time | 5 sec. |
Contact type | change-over contact (relay) |
Service life | > 50,000 cycles |
Max. switching capacity (relay output) | 240VAC / 120VAC 8 (1.6) A |
Max. inrush current | AC 16A for 10 sec. |
Optical indicator | LED |
Connection | 5-pole terminal, clamping torque 0.5Nm max.: rigid/stranded wire 2.5mm² (AWG 14 |
Mounting | clip for 35mm DIN rail, EN 60715 |
Casing | plastic according to UL94 V-0, light grey |
Dimensions | 64.5 x 42.5 x 38mm |
Weight | approx. 70g |
Fitting position | Fitting position |
Operating/Storage temperature | 0 to +60℃ (+32 to +140℉) / -20 to +70℃ (-4 to +158℉) |
Operating/Storage humidity | max. 90% RH (non-condensing) |
Protection type | IP20 |
¹ When connecting with stranded wires, wire end ferrules must be used.
Art. No. | Setting Range | Operating Voltage |
860664 | 40 to 90% RH | 230VAC, 50/60Hz |
860665 | 40 to 90% RH | 120VAC, 50/60Hz |
