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  • Electronic Hygrostat NT 77-M

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  • Parameters
NT 77-M
Switch difference5% RH (±3% RH tolerance) at +25℃ (+77℉), 50% RH
Reaction time5 sec.
Contact typechange-over contact (relay)
Service life > 50,000 cycles
Max. switching capacity (relay output)240VAC / 120VAC 8 (1.6) A
Max. inrush currentAC 16A for 10 sec.
Optical indicatorLED
Connection

5-pole terminal, clamping torque 0.5Nm max.: rigid/stranded wire 2.5mm²

(AWG 14

Mountingclip for 35mm DIN rail, EN 60715
Casingplastic according to UL94 V-0, light grey
Dimensions64.5 x 42.5 x 38mm
Weightapprox. 70g
Fitting positionFitting position
Operating/Storage temperature0 to +60℃ (+32 to +140℉) / -20 to +70℃ (-4 to +158℉)
Operating/Storage humiditymax. 90% RH (non-condensing)
Protection typeIP20

¹ When connecting with stranded wires, wire end ferrules must be used.

Art. No. 

Setting RangeOperating Voltage
86066440 to 90% RH230VAC, 50/60Hz
86066540 to 90% RH120VAC, 50/60Hz
  • Features

• Adjustable and pre-set relative humidity

• Status indicator (LED)

• High switching capacity

• Clip fxing

• Temperature-compensated


  • Structure Chart

NT-77-M.jpg

NT-77-M.jpg

  • Application

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.

  • Video

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