Type YF63NC & YF65NC: Adjustable manual reset electronic room limiters




– Equipment requesting a very strong resistance to water ingress. The transparent cover allows to visualize the set point and the 2 pilot lights.

Wall mounting for indoor or outdoor high temperature alarm of cold rooms.

High temperature alarm of industrial or commercial premises.

– Outdoor temperature alarm of antifreeze heaters.

High temperature alarm of green houses and livestock stables.


Housing: Protection class IP 66 upon EN 60529 (waterproof spray water under high pressure and sea splashes, totally dust tight). Body in black PA66, fiber glass reinforced. The transparent polycarbonate cover can be unscrewed by hand, but it is also possible to use a hook spanner. Mechanical impact resistance : IK10. High UV resistance.

Set point adjustment:  By °C printed knob. All types have an adjustable rotation limit system located inside the knob that allows reducing the set point adjustment span. °F printed knobs available as an option.

Operation:  Microprocessor electronic thermostat,

Sensing element: NTC probe, mounted on the top of the plastic housing.

Pilot lights: One pilot light visualizes the thermostat contact output position. The other visualizes the power supply input. Phase and line 230V power supply is mandatory for these pilot lights.

Set point adjustment ranges: -35-35°C (-30+95°F), 0-10°C (32-50°F), 4-40°C (40-105°F).

Reset: By push button switch beside the knob.

Cable input and output: Two M20 cable glands, built-in black PA66.

Electrical connections:  Inside, on screw terminal connection block. It is possible to connect 2 wires 1.5mm² on each terminal.

Earthing:  Internal screw terminal.

Mounting: Wall mounting, by 2 legs with holes for screws dia. 4 to 5 mm, 114  mm distance.

Identification: Identification label on backside

Contact: SPST. 16A (2.6), 250VAC. Open or close on temperature rise. Model with contact closing on temperature rise is used to switch on an alarm. Version with contact opening on temperature rise is used to switch off  heating.

Electrical life: >100.000 cycles. 

Minimum storage temperature: -35°C (-30°F)

Maximum ambient temperature: 60°C (140°F)

For more technical information ask 2PE2N6 thermostat technical data sheet.


Main references

Temperature adjustment ranges

°C (°F)

References with SPNC, open on temperature rise contact References with SPNO, close on temperature rise contact
-35+35°C (-30+95°F) YF63NC350350000J


0+10°C (32-50°F)

YF63NC000100000J YF65NC000100000J
+4+40°C (40-105°F) YF63NC040400000J


°F printing: replace last character (J) by K



2D&3D Drawing