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  • NT 40-F Tamper-Proof Thermostat (Pre-Set), with Fast Fixing

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

Product Model:NTL 40-F


Wechat:15088970667

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  • Parameters

Tamper-Proof Thermostat

NT 39-F / NT 40-F
Sensor elementthermostatic bimetal
Contact type snap-action contact
Service life > 100,000 cycles
Max. switching capacity 250VAC, 5 (1.6) A / 120VAC, 10 (2) A
DC 30W
Max. inrush current AC 16A for 10 sec.
Connection 2-pole terminal, clamping torque 0.8Nm max.:
rigid/stranded¹ wire 2.5mm² (AWG 14)
Mounting clip for 35mm DIN rail, EN 60715
Casing plastic according to UL94 V-0, light grey
Dimensions 33 x 33 x 58mm
Weight approx. 30g
Fitting position variable
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. Contact Switch-off temperature Switch-on temperature
39NCF01Contact breaker (NC) +15°C / +59°F+5°C / +41°F
39NCF02Contact breaker (NC) +25°C / +77°F +15°C / +59°F
39NCF03Contact breaker (NC) +10°C / +50°F0°C / +32°F


Art. No. Contact Switch-off temperature Switch-on temperature
40NOF01Contact breaker (NC) +50°C / +122°F +40°C / +104°F
40NOF02Contact breaker (NC) +60°C / +140°F+50°C / +122°F
40NOF03Contact breaker (NC) +35°C / +95°F+25°C / +77°F


  • Features

> Small size

> Default temperature settings

> Easy to install

> High switching accuracy

  • Structure Chart

Tamper-Proof Thermostat stucture Chart

  • 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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