thermostats
3156 Series
The 3156 Series is a single pole, single throw switch actuated by a snap-action bimetal disc, factory pre-set and fully inspected. Its laser-welded hermetic steel housing is low profile, with gold alloy contacts for low voltage applications.
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Overview
The 3156 Series consists of a single pole, single throw switch activated by a snap-action bimetal disc. Temperature calibrations are pre-set at the factory and each unit is 100% thermally and mechanically inspected. It is available to open or close on temperature rise. The case is laser welded to form a hermetically-sealed steel housing with a glass-to-metal seal at the terminal junction. The low silhouette and compact design often make it especially well suited for applications that require miniaturization. They have gold alloy contacts for low voltage applications.
Features
- Hermetically sealed
- Tight tolerances
- Tight differential
- Low profile
Applications
- Industrial
- Food service
- Telecom
- Medical
- Infotech
Specifications
Standards & Certifications
- Agency Approvals and Standards
- UL
Technical Specifications
- Thermostat Environmental Exposure Range
- -54 °C to 260 °C [-65 °F to 500 °F]
- Thermostat Contact Resistance
- MIL-STD-202, Method 307; 0.050 Ohm
- Insulation Resistance
- 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
- MIL-STD-202, Method 301; 750 Vac 60 Hz - Terminal to Case
Features
- Seal Type
- MIL-STD-202, Method 112; Cond. 1x10-5
Operating Characteristics
- Operating Temperature
- -29 °C to 177 °C [-20 °F to 350 °F]
- Humidity
- MIL-STD-202, Method 106
Standards & Certifications
- Agency Approvals and Standards
- UL
Technical Specifications
- Thermostat Environmental Exposure Range
- -54 °C to 260 °C [-65 °F to 500 °F]
- Thermostat Contact Resistance
- MIL-STD-202, Method 307; 0.050 Ohm
- Insulation Resistance
- 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
- MIL-STD-202, Method 301; 750 Vac 60 Hz - Terminal to Case
Features
- Seal Type
- MIL-STD-202, Method 112; Cond. 1x10-5
Operating Characteristics
- Operating Temperature
- -29 °C to 177 °C [-20 °F to 350 °F]
- Humidity
- MIL-STD-202, Method 106
- Agency Approvals and Standards : UL
- Thermostat Environmental Exposure Range : -54 °C to 260 °C [-65 °F to 500 °F]
- Thermostat Contact Resistance : MIL-STD-202, Method 307; 0.050 Ohm
- Seal Type : MIL-STD-202, Method 112; Cond. 1x10-5
- Operating Temperature : -29 °C to 177 °C [-20 °F to 350 °F]
- Insulation Resistance : MIL-STD-202, Method 302; Cond. B - 500 MOhm - 500 Vdc applied
- Humidity : MIL-STD-202, Method 106
- Dielectric Strength : MIL-STD-202, Method 301; 1250 Vac 60 Hz - Terminal to Case|MIL-STD-202, Method 301; 750 Vac 60 Hz - Terminal to Case
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Data Sheet
Name
Description
File Size
Date
Size
Precision and High Reliability Thermostats
application/pdf 5.15 MB
6/9/2026
5.15 MB
Manuals and Guides
Name
Description
File Size
Date
Size
Technical Tip Bulletin - Precision Thermostat | Gold Contact Selection Guide
application/pdf 39.61 KB
6/23/2026
39.61 KB
Precision Thermostat Selection Guide
application/pdf 264.88 KB
6/23/2026
264.88 KB
Soldering Wire Leads on Precision Hermetic Thermostats
application/pdf 223.03 KB
6/12/2026
223.03 KB
Brochure
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
Technical Note
Name
Description
File Size
Date
Size
Industrial Product Line Card --
application/pdf 2.24 MB
8/14/2025
2.24 MB
Application Note
Name
Description
File Size
Date
Size
Agricultural Vehicles Application Note
application/pdf 1.11 MB
8/20/2025
1.11 MB
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
Sensing Solutions For Industrial Applications Brochure
application/pdf 16.68 MB
1/22/2026
16.68 MB
Technical Tip Bulletin - Precision Thermostat | Gold Contact Selection Guide
application/pdf 39.61 KB
6/23/2026
39.61 KB
Agricultural Vehicles Application Note
application/pdf 1.11 MB
8/20/2025
1.11 MB
Precision and High Reliability Thermostats
application/pdf 5.15 MB
6/9/2026
5.15 MB
Brochure about Honeywell's Sensor & Switch Solutions for HVAC.
application/pdf 11.68 MB
2/16/2026
11.68 MB
Precision Thermostat Selection Guide
application/pdf 264.88 KB
6/23/2026
264.88 KB
Duty to excel with mission-critical solutions
application/pdf 15.17 MB
8/21/2025
15.17 MB
Soldering Wire Leads on Precision Hermetic Thermostats
application/pdf 223.03 KB
6/12/2026
223.03 KB
Industrial Product Line Card --
application/pdf 2.24 MB
8/14/2025
2.24 MB
Name
Description
File Size
Date
Size
Precision and High Reliability Thermostats
5.15 MB
6/9/2026
Technical Tip Bulletin - Precision Thermostat | Gold Contact Selection Guide
39.61 KB
6/23/2026
Soldering Wire Leads on Precision Hermetic Thermostats
223.03 KB
6/12/2026
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
Product Number
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3156 00530006
T109 B210 COR O10205 C11304
https://s7d1.scene7.com/is/image/Honeywell65/sps-siot-l-model-3156-load-400x400-top-ciid-161547
3156 00530006
T109 B210 COR O10205 C11304
https://s7d1.scene7.com/is/image/Honeywell65/sps-siot-l-model-3156-load-400x400-top-ciid-161547
