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  • Tamper-Proof Thermostat (Pre-Set), with Fast Fixing Part NT

Product Name:Tamper-Proof Thermostat (Pre-Set), with Fast Fixing Part NT 83-F

Product Model:Tamper-Proof Thermostat (Pre-Set), with Fast Fixing Part NT 83-F


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  • Parameters

Tamper-Proof Thermostat

NT 83-F
Sensor elementthermostatic bimetal
Contact typesnap-action contact
Service life> 100,000 cycles
Max. switching capacity250VAC, 5 (1.6) A / 120VAC, 10 (2) A
DC 30W
Max. inrush currentAC 16A for 10 sec.
Connection2-pole terminal, clamping torque 0.8Nm max.:
rigid/stranded¹ wire 2.5mm² (AWG 14)
Mountingclip for 35mm DIN rail, EN 60715
Casingplastic according to UL94 V-0, light grey
Dimensions66 x 33 x 58mm
Weightapprox. 60g
Fitting positionvariable
Operating/Storage temperature-40 to +80°C (-40 to +176°F) / -45 to +80°C (-49 to +176°F)
Operating/Storage humiditymax. 90% RH (non-condensing)
Protection typeIP20

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


Art. No. Switch-off temperatureSwitch-on temperatureSwitch-on temperatureSwitch-off temperature
83F01+15°C / +59°F +5°C / +41°F+50°C / +122°F+40°C / +104°F
83F02+25°C / +77°F+15°C / +59°F+60°C / +140°F+50°C / +122°F
83F03+10°C / +50°F 0°C / +32°F+35°C / +95°F +25°C / +77°F


  • Features

> NC / NO or NO / NO in one unit

> DIN rail mountable

> With Fast Fixing part, Easy to install

> High switching accuracy

  • Structure Chart

Tamper-Proof Thermostat

  • Certification
  • Application

Tamper-proof (Pre-set) Thermostat NT 39-F: Contact breaker/NC (red casing) for regulating heaters or for switching signal devices when temperature has fallen below the minimum value. The contact opens when temperature is rising.

Tamper-proof (Pre-set) Thermostat NT 40-F: Contact maker/NO (blue casing) for regulating filter fans, heat exchangers, cooling devices or for switching signal devices when temperature limit has been exceeded. The contact closes when temperaure is rising.

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