Rugged Bulb & Capillary Thermostats

AR Series

Bulb Capillary Thermostats | AR Series

Bulb Capillary Thermostats

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  • Bulb and Capillary Design
  • Long-Lasting, Snap-Action Mechanism
  • Double-Pole, Single-Throw Contacts
  • 3 Different Bulb Styles Available
  • Optional Knob Cover and Pilot Light
Controladores de Temperatura e Processo - Ver Produtos Relacionados


These thermostats use sensitive bulbs that can be used in confined locations. Styles 4 and 5 bulbs are designed for inserting in drilled holes in platens and dies or for direct immersion.

Sensors for air and pipeline heating applications (style 9) can be coiled to inside radii as small as 13 mm (½inch).

Temperature Range: -20 to 370°C (-4 to 698°F)
Operating Voltage:
    Single-Phase: 120 to 480V
    3-Phase: 120 to 277V
Enclosure: General purpose
Contacts: DPST, open on temperature rise; at positive off position, contacts cannot close
Differential: ±4% of scale
Bulb and Capillary: Copper for units rated at 120°C (248°F) and lower; nickel-plated copper for units between 95°C (203°F) and 290°C (504°F); tin-plated steel for units between 150°C (302°F) and 370°C (698°F)
    AR and ARR Series: 1.14 kg (2.5 lb)
    AR-LT and AR-EP Series: 2.27 kg (5 lb)
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