28 items Patent
Small size
Default temperature settings
Easy to install
High switching accuracy
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.
Technical Data
NT 39-F / NT 40-F | |
Sensor element | thermostatic 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 humidity | max. 90% RH (non-condensing) |
Protection type | IP20 |
¹ When connecting with stranded wires, wire end ferrules must be used.
Art. No. | Contact | Switch-off temperature | Switch-on temperature |
39NCF01 | Contact breaker (NC) | +15°C / +59°F | +5°C / +41°F |
39NCF02 | Contact breaker (NC) | +25°C / +77°F | +15°C / +59°F |
39NCF03 | Contact breaker (NC) | +10°C / +50°F | 0°C / +32°F |
Art. No. | Contact | Switch-off temperature | Switch-on temperature |
40NOF01 | Contact breaker (NC) | +50°C / +122°F | +40°C / +104°F |
40NOF02 | Contact breaker (NC) | +60°C / +140°F | +50°C / +122°F |
40NOF03 | Contact breaker (NC) | +35°C / +95°F | +25°C / +77°F |
