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Overview

3500 Series Military Thermostats.
The 3500 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. It meets or exceeds the requirements of MIL-S- 24236 and is designed specifically for military and commercial aircraft applications. It is not QPL listed (see 3MS1).
3500 00290078 Military/Commercial Aircraft - Honeywell


Technical Specifications

Functional Properties Open on rise
Reset Type Automatic
Operating Temperature -46 °C to 204 °C [-50 °F to 400 °F]
Amperage 5.0 A resistive
Voltage 28 Vac/Vdc
Open Temperature 65.6 °C [150 °F]
Open Tolerance 2.8 °C [5 °F]
Close Temperature 48.9 °C [120 °F]
Close Tolerance 2.8 °C [5 °F]
Environmental Exposure Range -65 °C to 260 °C [-85 °F to 500 °F]
Dielectric Strength MIL-STD-202, Method 301; 1250 Vac 60 Hz - Terminal to Case
Insulation Resistance MIL-STD-202, Method 302; 500 MOhm
Contact Resistance MIL-STD-202, Method 307; 0.050 Ohm max.
Hermetic Seal MIL-STD-202, Method 112; Cond. C
Moisture Resistance MIL-STD-202, Method 106
Shock MIL-STD-202, Method 213; 400 G
Vibration MIL-STD-202, Method 204; 20 G
Thermal Shock MIL-STD-202, Method 107; Cond. B
Acceleration MIL-STD-202, Method 212; 20 G
Salt Spray MIL-STD-202, Method 101; Cond. B
Housing Material Steel housing hermetically sealed with glass-to-metal seal at terminal junction
Contact Material Consil alloy MG/silver
Mounting No bracket
Agency Approvals and Standards Meets or exceeds requirements of Mil-PRF-24236
Series Name 3500

Technical Specifications

Functional Properties Open on rise
Reset Type Automatic
Operating Temperature -46 °C to 204 °C [-50 °F to 400 °F]
Amperage 5.0 A resistive
Voltage 28 Vac/Vdc
Open Temperature 65.6 °C [150 °F]
Open Tolerance 2.8 °C [5 °F]
Close Temperature 48.9 °C [120 °F]
Close Tolerance 2.8 °C [5 °F]
Environmental Exposure Range -65 °C to 260 °C [-85 °F to 500 °F]
Dielectric Strength MIL-STD-202, Method 301; 1250 Vac 60 Hz - Terminal to Case
Insulation Resistance MIL-STD-202, Method 302; 500 MOhm
Contact Resistance MIL-STD-202, Method 307; 0.050 Ohm max.
Hermetic Seal MIL-STD-202, Method 112; Cond. C
Moisture Resistance MIL-STD-202, Method 106
Shock MIL-STD-202, Method 213; 400 G
Vibration MIL-STD-202, Method 204; 20 G
Thermal Shock MIL-STD-202, Method 107; Cond. B
Acceleration MIL-STD-202, Method 212; 20 G
Salt Spray MIL-STD-202, Method 101; Cond. B
Housing Material Steel housing hermetically sealed with glass-to-metal seal at terminal junction
Contact Material Consil alloy MG/silver
Mounting No bracket
Agency Approvals and Standards Meets or exceeds requirements of Mil-PRF-24236
Series Name 3500

Documents

TITLE DOCUMENT TYPE LANGUAGE SIZE
Precision and High Reliability Thermostats Datasheet -- 4MB
Thermostats Line Guide Product Line Guide English 444KB
Soldering Wire Leads on Precision Hermetic Thermostats Installation Instructions English 57KB
Thermal Sensors Product Range Guide English 12MB
Aerospace and Defense Product Range Guide Product Range Guide English 22MB

Product Features

  • Hermetically sealed
  • Tight tolerances
  • Tight differentials
  • Hi-Rel

Applications

  • Military and commercial aircraft

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