and WeatherKing furnace and air handler models

Built with a laminated iron core to mitigate excessive vibration and buzzing

Is the 171702 compatible with manual reset requirements

it is specifically engineered for continuous operation in building automation systems (BAS) and industrial control environments

Designed for natural gas and propane applications

Carrier HH18HA199 Limit Switch 340155-7024 and WeatherKing furnace and airThe Carrier HH18HA199 Limit Switch is a critical safety component designed for high temperature monitoring in HVAC induction combustion furnaces and residential heating systems. This genuine OEM replacement part is calibrated to trigger at a fixed 200 degree opening temperature, automatically interrupting the electrical circuit via its SPST (Single Pole Single Throw) configuration to prevent heat exchanger damage or hazardous rollout conditions.