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    thermostats

    3100U Series

    Hermetically sealed. UL &/or CSA. Tight tolerances & differentials. Pre-set & tamper proof. SPST contacts. Mounting brackets, terminals.

    Overview

    The 3100U Series is a single-pole, single-throw switch activated by a snap-action bimetal disc. The case is laser welded to form a hermetically-sealed steel housing, with a glass-to-metal seal at the terminal junction. Temperature calibrations are pre-set at the factory. Each unit is thermally and mechanically inspected and tamperproof. They are available to open or close on temperature rise. A variety of mounting brackets and terminals is available. Used in high temperature control. 3100U 240 V: UL/CSA approved.

    Features
    • Hermetically sealed
    • Tight tolerances
    • Tight differentials
    Potential Applications
    • Computers
    • Medical electronics
    • Power supplies
    • Industrial controls
    • Test equipment
    • Infotech
    Specifications

    Technical Specifications

    • Insulation Resistance
      • MIL-STD-202, Method 302; 50 MOhm
      • MIL-STD-202, Method 302; Cond. B - 500 MOhm - 500 Vdc applied
    • Thermostat Contact Resistance
      • MIL-STD-202, Method 307; 0.050 Ohm
      • MIL-STD-202, Method 307; 0.050 Ohm max.

    Technical Specifications

    • Insulation Resistance
      • MIL-STD-202, Method 302; 50 MOhm
      • MIL-STD-202, Method 302; Cond. B - 500 MOhm - 500 Vdc applied
    • Thermostat Contact Resistance
      • MIL-STD-202, Method 307; 0.050 Ohm
      • MIL-STD-202, Method 307; 0.050 Ohm max.
    • Insulation Resistance : MIL-STD-202, Method 302; 50 MOhm|MIL-STD-202, Method 302; Cond. B - 500 MOhm - 500 Vdc applied
    • Thermostat Contact Resistance : MIL-STD-202, Method 307; 0.050 Ohm|MIL-STD-202, Method 307; 0.050 Ohm max.
    Ficha Técnica
    Name
    Description
    File Size
    Date
    Size
    Precision and High Reliability Thermostats
    application/pdf 5.15 MB
    8/21/2025
    5.15 MB
    Manuais e guias
    Name
    Description
    File Size
    Date
    Size
    Thermostats Line Guide
    application/pdf 450.42 KB
    8/13/2025
    450.42 KB
    Redi-Temp Universal Thermostats 3100 SPST Hermetic Series - Selection Guide
    application/pdf 226.67 KB
    8/14/2025
    226.67 KB
    Technical Tip Bulletin - Precision Thermostat | Gold Contact Selection Guide
    application/pdf 33.28 KB
    8/13/2025
    33.28 KB
    Folheto
    Name
    Description
    File Size
    Date
    Size
    Sensing Solutions For Industrial Applications Brochure
    application/pdf 16.68 MB
    1/22/2026
    16.68 MB
    Brochure about Honeywell's Sensor & Switch Solutions for HVAC.
    application/pdf 11.68 MB
    2/16/2026
    11.68 MB
    Nota técnica
    Name
    Description
    File Size
    Date
    Size
    Industrial Product Line Card --
    application/pdf 2.24 MB
    8/14/2025
    2.24 MB
    Nota de aplicação
    Name
    Description
    File Size
    Date
    Size
    Platform Vehicles
    application/pdf 628.05 KB
    8/14/2025
    628.05 KB
    Forestry Vehicles
    application/pdf 1.05 MB
    8/14/2025
    1.05 MB
    Construction Vehicles
    application/pdf 984.29 KB
    8/21/2025
    984.29 KB
    Agricultural Vehicles Application Note
    application/pdf 1.11 MB
    8/20/2025
    1.11 MB
    Defence Ground Vehicles
    application/pdf 872.87 KB
    8/20/2025
    872.87 KB
    eBook
    Name
    Description
    File Size
    Date
    Size
    Duty to excel with mission-critical solutions
    application/pdf 15.17 MB
    8/21/2025
    15.17 MB
    Name
    Description
    File Size
    Date
    Size
    Platform Vehicles
    application/pdf 628.05 KB
    8/14/2025
    628.05 KB
    Forestry Vehicles
    application/pdf 1.05 MB
    8/14/2025
    1.05 MB
    Thermostats Line Guide
    application/pdf 450.42 KB
    8/13/2025
    450.42 KB
    Construction Vehicles
    application/pdf 984.29 KB
    8/21/2025
    984.29 KB
    Agricultural Vehicles Application Note
    application/pdf 1.11 MB
    8/20/2025
    1.11 MB
    Redi-Temp Universal Thermostats 3100 SPST Hermetic Series - Selection Guide
    application/pdf 226.67 KB
    8/14/2025
    226.67 KB
    Precision and High Reliability Thermostats
    application/pdf 5.15 MB
    8/21/2025
    5.15 MB
    Defence Ground Vehicles
    application/pdf 872.87 KB
    8/20/2025
    872.87 KB
    Technical Tip Bulletin - Precision Thermostat | Gold Contact Selection Guide
    application/pdf 33.28 KB
    8/13/2025
    33.28 KB
    Duty to excel with mission-critical solutions
    application/pdf 15.17 MB
    8/21/2025
    15.17 MB
    Sensing Solutions For Industrial Applications Brochure
    application/pdf 16.68 MB
    1/22/2026
    16.68 MB
    Industrial Product Line Card --
    application/pdf 2.24 MB
    8/14/2025
    2.24 MB
    Brochure about Honeywell's Sensor & Switch Solutions for HVAC.
    application/pdf 11.68 MB
    2/16/2026
    11.68 MB
    Name
    Description
    File Size
    Date
    Size
    Precision and High Reliability Thermostats
    5.15 MB
    8/21/2025
    Thermostats Line Guide
    450.42 KB
    8/13/2025
    Redi-Temp Universal Thermostats 3100 SPST Hermetic Series - Selection Guide
    226.67 KB
    8/14/2025
    Technical Tip Bulletin - Precision Thermostat | Gold Contact Selection Guide
    33.28 KB
    8/13/2025
    Sensing Solutions For Industrial Applications Brochure
    16.68 MB
    1/22/2026
    Brochure about Honeywell's Sensor & Switch Solutions for HVAC.
    11.68 MB
    2/16/2026
    Industrial Product Line Card --
    2.24 MB
    8/14/2025
    Platform Vehicles
    628.05 KB
    8/14/2025
    Forestry Vehicles
    1.05 MB
    8/14/2025
    Construction Vehicles
    984.29 KB
    8/21/2025
    Agricultural Vehicles Application Note
    1.11 MB
    8/20/2025
    Defence Ground Vehicles
    872.87 KB
    8/20/2025
    Duty to excel with mission-critical solutions
    15.17 MB
    8/21/2025

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