Single pole control thermostat (commercial type)

Weight 0.8 kg
Dimensions 79 × 53 × 36 mm
Electrical rating

Capillary length (mm)

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Description

Housing dimensions: 79x53x36mm (without terminals)

Bulb and capillary: copper for temperature ranges up to 50°C (122°F), stainless steel over, capillary length 1500 mm or 3000 mm. Capillary minimum bending radius 5mm.

Temperature sensing element: liquid filled bulb and capillary.

Terminals:  6.35  x  0.8  quick  connect  terminals  (M4  screws  also  available  on  request),

Adjustment: Dia. 6 mm shaft with 4.6 mm flat, (other lengths or fixed setting available on request).

Mounting: Front bracket with 2xM4 threads, 28mm distance

Rating: 15A (1/4 HP) 250VAC, 15A 400V res. KU type cannot be used on 400V

Contacts: SPDT  (snap action contact)

Electrical life: >500,000 cycles at nominal rating

 

MAIN REFERENCES

These thermostats are also available with screw driver adjustment, 20 or 30 mm shaft length.

Caution: Bulbs and capillaries of ranges higher than 300°C are filled with sodium potassium eutectic. If they leak or are broken this liquid is flammable if in contact with water.

 

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Technical specifications sheet

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Technical informations associated to this product

  • Thermostats installation

    The proper functioning of a thermostat depends primarily on the correct choice of the component, but also the conditions of its installation. Conditions used to calibrate regulating and control equipment in the factory are always ideal laboratory conditions, ensuring measurement accuracy and repeatability. These conditions are rarely those found in practice when installing thermostats. However, with a minimum of constraints, it is possible to optimize assemblies.

  • Electrical contacts

    As numerous mechanisms exist, we decided not to distinguish on the basis of constructive technique, but according to their operation speed, which is the key element.

  • Description of temperature controls

    Used as control thermostats or as a safety thermostat with manual reset, these thermostats have a disc made of two different metals laminated together for temperature sensing element. These two metals have different expansion coefficients.

  • Temperature sensing principles

    The bimetal strip is formed by two co-laminated metal. One has a high coefficient of expansion, the othera lower or zero. When the strip is heated, it bends proportionally to the temperature. These bimetal blades are generally flat and fixed at one end. But they can be wound in a spiral shape, although this arrangement most often used in the construction of thermometers.