Field Controls 46086402 GSK-4 Manual Reset Thermal Safety Switch 200°F mV/24V

The Field Controls 46086402 (model GSK-4) is a manual reset thermal safety switch, also called a gas spill switch or thermal safety cutoff. It is rated at 200°F and works with millivolt and 24 VAC gas-fired systems.

Key Features:

• Manual reset: After the switch trips, the burner cannot restart until someone resets it by hand.
• 200°F trip temperature: This model suits applications that need a slower response time.
• Millivolt / 24 VAC operation: Made for gas-fired millivolt or 24 VAC applications.
• SPST gold contacts: A single-pole, single-throw switch with gold contacts.
• Typical use: Residential and light commercial gas furnaces, boilers and water heaters. It is generally used with sidewall venting.

The switch detects the extra heat from flue gas spillage and shuts down the furnace or boiler. This helps protect the equipment and the people around it. Install it according to all national and local codes.