SPDT Bimetal rod thermostats with dead zone

These thermostat have a rod section that is not sensible to temperature. This allows to keep the thermostat head away from high temperatures. Therefore, they are more used in air duct temperature control.

Electrical rating

Max operating temperature (°C)

Temperature adjustment range (°C)

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Rod length (mm)

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Differential (°C)

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Max temperature on rod (°C)

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Description

TECHNICAL FEATURES

Applications: These thermostat have a rod section that is not sensible to temperature. This allows to keep the thermostat head away from high temperatures. Therefore, they are more used in air duct temperature control.

Temperature ranges: 0-100°C (32-212°F), 0-200 °C (32-392°F), 0-300°C (32-572°F), 0-400°C (32-752°F)

Housing dimensions: 65 x48 x 48 mm (knob not included)

Material: PA66 housing, and Aisi 304 stainless steel rod

Temperature sensing element: Invar/stainless steel bimetal rod, temperature sensing

Electrical connections: screw terminals

Mounting:

  • For liquid temperature sensing: inside pocket with internal diameter > 10 mm , or directly on 3/8”BSPP thread under the head, or with 3/8 x1/2” fitting (see accessories)
  • For air temperature sensing measurement: with stainless steel bracket, with or without rod cooler

Rating: 16(4)A 250/400VAC, 300.000 cycles. Reduced differential model is not recommended for 400V applications. Contacts: SPDT, snap action

Max ambient temperature on the head: 85°C (185°F)

Options:

  • Cnomo electrical connector
  • Other temperature
  • Other rod lengths
  • IP65 aluminum housing

Accessories: BSPT 1/2’’ stainless steel pocket, fittings, bracket, see full description and references  at end of this catalogue

Approvals: comply with EN 60730-1 and EN 60730-2 standards

 

Main references

Downloads

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Technical informations associated to this product

  • 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.
  • 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.
  • Electrical protection classes

    The housings are designed to protect electrical equipment located inside. This protection must be considered in the electrical and environmental angles.)