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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
3100U Series
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Distributor Inventory

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

Operating Characteristics

  • Humidity
    • MIL-STD-202, Method 105
    • MIL-STD-202, Method 106
  • Operating Temperature
    • -29 °C to 260 °C [-20 °F to 500 °F]

Technical Specifications

  • Thermostat Environmental Exposure Range
    • -62 °C to 288 °C [-80 °F to 550 °F]
  • 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
  • Dielectric Strength
    • MIL-STD-202, Method 301; 1250 Vac 60 Hz - Terminal to Case

Standards & Certifications

  • Agency Approvals and Standards
    • UL
    • UL, CSA

Features

  • Seal Type
    • MIL-STD-202, Method 112; Cond. 1x10-4
    • MIL-STD-202, Method 112; Cond. 1x10-5

Operating Characteristics

  • Humidity
    • MIL-STD-202, Method 105
    • MIL-STD-202, Method 106
  • Operating Temperature
    • -29 °C to 260 °C [-20 °F to 500 °F]

Technical Specifications

  • Thermostat Environmental Exposure Range
    • -62 °C to 288 °C [-80 °F to 550 °F]
  • 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
  • Dielectric Strength
    • MIL-STD-202, Method 301; 1250 Vac 60 Hz - Terminal to Case

Standards & Certifications

  • Agency Approvals and Standards
    • UL
    • UL, CSA

Features

  • Seal Type
    • MIL-STD-202, Method 112; Cond. 1x10-4
    • MIL-STD-202, Method 112; Cond. 1x10-5
  • Humidity : MIL-STD-202, Method 105|MIL-STD-202, Method 106
  • Thermostat Environmental Exposure Range : -62 °C to 288 °C [-80 °F to 550 °F]
  • Agency Approvals and Standards : UL|UL, CSA
  • Thermostat Contact Resistance : MIL-STD-202, Method 307; 0.050 Ohm|MIL-STD-202, Method 307; 0.050 Ohm max.
  • Operating Temperature : -29 °C to 260 °C [-20 °F to 500 °F]
  • Insulation Resistance : MIL-STD-202, Method 302; 50 MOhm|MIL-STD-202, Method 302; Cond. B - 500 MOhm - 500 Vdc applied
  • Dielectric Strength : MIL-STD-202, Method 301; 1250 Vac 60 Hz - Terminal to Case
  • Seal Type : MIL-STD-202, Method 112; Cond. 1x10-4|MIL-STD-202, Method 112; Cond. 1x10-5
Data Sheet
Name
Description
File Size
Date
Size
Precision and High Reliability Thermostats
Precision and High Reliability Thermostats
application/pdf 5.15 MB
8/24/2021
5.15 MB
Manuals and Guides
Name
Description
File Size
Date
Size
Thermostats Line Guide
Thermostats Line Guide
application/pdf 450.42 KB
7/16/2021
450.42 KB
Redi-Temp Universal Thermostats 3100 SPST Hermetic Series - Selection Guide
Redi-Temp Universal Thermostats 3100 SPST Hermetic Series - Selection Guide
application/pdf 226.67 KB
8/25/2021
226.67 KB
Precision Thermostat Selection Guide
Precision Thermostat Selection Guide
application/pdf 258.21 KB
8/24/2021
258.21 KB
Technical Tip Bulletin - Precision Thermostat | Gold Contact Selection Guide
Technical Tip Bulletin - Precision Thermostat | Gold Contact Selection Guide
application/pdf 33.28 KB
8/24/2021
33.28 KB
Brochure
Name
Description
File Size
Date
Size
Industrial Applications: Going Beyond Limits
Industrial Applications: Going Beyond Limits
application/pdf 16.68 MB
2/11/2025
16.68 MB
Technical Note
Name
Description
File Size
Date
Size
Industrial Product Line Card
Industrial Product Line Card --
application/pdf 2.24 MB
10/25/2022
2.24 MB
Application Note
Name
Description
File Size
Date
Size
Construction Vehicles
Construction Vehicles -
application/pdf 984.29 KB
12/20/2022
984.29 KB
Agricultural Vehicles
Agricultural Vehicles
application/pdf 1.11 MB
4/11/2024
1.11 MB
Defence Ground Vehicles
Defence Ground Vehicles -
application/pdf 872.87 KB
6/14/2023
872.87 KB
Forestry Vehicles
Forestry Vehicles
application/pdf 1.05 MB
12/20/2022
1.05 MB
Platform Vehicles
Platform Vehicles
application/pdf 628.05 KB
12/20/2022
628.05 KB
eBook
Name
Description
File Size
Date
Size
Military Defense Solutions eBook
Military Defense Solutions eBook
application/pdf 15.17 MB
2/17/2025
15.17 MB
Name
Description
File Size
Date
Size
Thermostats Line Guide
Thermostats Line Guide
application/pdf 450.42 KB
7/16/2021
450.42 KB
Construction Vehicles
Construction Vehicles -
application/pdf 984.29 KB
12/20/2022
984.29 KB
Agricultural Vehicles
Agricultural Vehicles
application/pdf 1.11 MB
4/11/2024
1.11 MB
Redi-Temp Universal Thermostats 3100 SPST Hermetic Series - Selection Guide
Redi-Temp Universal Thermostats 3100 SPST Hermetic Series - Selection Guide
application/pdf 226.67 KB
8/25/2021
226.67 KB
Precision and High Reliability Thermostats
Precision and High Reliability Thermostats
application/pdf 5.15 MB
8/24/2021
5.15 MB
Precision Thermostat Selection Guide
Precision Thermostat Selection Guide
application/pdf 258.21 KB
8/24/2021
258.21 KB
Defence Ground Vehicles
Defence Ground Vehicles -
application/pdf 872.87 KB
6/14/2023
872.87 KB
Technical Tip Bulletin - Precision Thermostat | Gold Contact Selection Guide
Technical Tip Bulletin - Precision Thermostat | Gold Contact Selection Guide
application/pdf 33.28 KB
8/24/2021
33.28 KB
Military Defense Solutions eBook
Military Defense Solutions eBook
application/pdf 15.17 MB
2/17/2025
15.17 MB
Industrial Applications: Going Beyond Limits
Industrial Applications: Going Beyond Limits
application/pdf 16.68 MB
2/11/2025
16.68 MB
Forestry Vehicles
Forestry Vehicles
application/pdf 1.05 MB
12/20/2022
1.05 MB
Industrial Product Line Card
Industrial Product Line Card --
application/pdf 2.24 MB
10/25/2022
2.24 MB
Platform Vehicles
Platform Vehicles
application/pdf 628.05 KB
12/20/2022
628.05 KB
Name
Date
Size
Precision and High Reliability Thermostats
8/24/2021
Thermostats Line Guide
7/16/2021
Redi-Temp Universal Thermostats 3100 SPST Hermetic Series - Selection Guide
8/25/2021
Precision Thermostat Selection Guide
8/24/2021
Technical Tip Bulletin - Precision Thermostat | Gold Contact Selection Guide
8/24/2021
Industrial Applications: Going Beyond Limits
2/11/2025
Industrial Product Line Card
10/25/2022
Construction Vehicles
12/20/2022
Agricultural Vehicles
4/11/2024
Defence Ground Vehicles
6/14/2023
Forestry Vehicles
12/20/2022
Platform Vehicles
12/20/2022
Military Defense Solutions eBook
2/17/2025
Showing 1 to 10 of 110 parts
Product Number
Part Number
Description
Leaf Category
Thumbnail
3100U 00031440
T116 B209 OOR O13005 C11005
https://s7d1.scene7.com/is/image/Honeywell65/sps-siot-honeywell-sensing-thermostats-3100-series-ciid-162978
3100U 00031440
T116 B209 OOR O13005 C11005
https://s7d1.scene7.com/is/image/Honeywell65/sps-siot-honeywell-sensing-thermostats-3100-series-ciid-162978
3100U 00031443
T116 B209 OOR O16005 C14005
https://s7d1.scene7.com/is/image/Honeywell65/sps-siot-honeywell-sensing-thermostats-3100-series-ciid-162978
3100U 00031443
T116 B209 OOR O16005 C14005
https://s7d1.scene7.com/is/image/Honeywell65/sps-siot-honeywell-sensing-thermostats-3100-series-ciid-162978
3100U 00031444
T116 B209 OOR O17005 C15004
https://s7d1.scene7.com/is/image/Honeywell65/sps-siot-honeywell-sensing-thermostats-3100-series-ciid-162978
3100U 00031444
T116 B209 OOR O17005 C15004
https://s7d1.scene7.com/is/image/Honeywell65/sps-siot-honeywell-sensing-thermostats-3100-series-ciid-162978
3100U 00031452
T116 B209 OOR O25008 C22506
https://s7d1.scene7.com/is/image/Honeywell65/sps-siot-honeywell-sensing-thermostats-3100-series-ciid-162978
3100U 00031452
T116 B209 OOR O25008 C22506
https://s7d1.scene7.com/is/image/Honeywell65/sps-siot-honeywell-sensing-thermostats-3100-series-ciid-162978
3100U 00031457
T116 B209 COR O08005 C10005
https://s7d1.scene7.com/is/image/Honeywell65/sps-siot-honeywell-sensing-thermostats-3100-series-ciid-162978
3100U 00031457
T116 B209 COR O08005 C10005
https://s7d1.scene7.com/is/image/Honeywell65/sps-siot-honeywell-sensing-thermostats-3100-series-ciid-162978
3100U 00031461
T116 B209 COR O16005 C18005L
https://s7d1.scene7.com/is/image/Honeywell65/sps-siot-honeywell-sensing-thermostats-3100-series-ciid-162978
3100U 00031461
T116 B209 COR O16005 C18005L
https://s7d1.scene7.com/is/image/Honeywell65/sps-siot-honeywell-sensing-thermostats-3100-series-ciid-162978
3100U 00031462
T116 B209 COR O18005 C20004
https://s7d1.scene7.com/is/image/Honeywell65/sps-siot-honeywell-sensing-thermostats-3100-series-ciid-162978
3100U 00031462
T116 B209 COR O18005 C20004
https://s7d1.scene7.com/is/image/Honeywell65/sps-siot-honeywell-sensing-thermostats-3100-series-ciid-162978

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