The 3100 series from Honeywell consist 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 manufactured and tested to meet or exceed critical commercial and industrial specifications.

Hermetically sealed steel housing
Tight Tolerances
Tight differentials
It is available to open or close on temperature rise
Potential Applications: Computers, medical electronics, power supplies, industrial controls, test equipment and infotech

This thermostat from Honeywell precisely monitors the temperature of your system. It's preset to open at +60°C and close at +40°C to ensure temperatures stay within necessary limits. The unit is hermetically sealed to make it airtight and watertight, so it's ideal for applications in harsh environments. Its tamperproof design prevents unauthorised personnel from altering its operation.

• Steel housing material for resistance to corrosion and wear
• Pre-calibrated for ease of setup and use
• Wide operating temperature range between -29°C and +260°C for use in demanding environments

• Fluid management systems
• HVAC equipment

A bi-metallic thermostat has two different pieces of metal that expand at different rates in response to rises in temperature. When a preset temperature is reached, one of the pieces of metal bends and breaks the circuit.