Description
The YORK S1 3500 3151/A is a genuine OEM auto limit switch designed to provide reliable temperature based safety control in furnaces and HVAC systems. Its role is to monitor internal temperature and automatically interrupt power when critical thresholds are exceeded — protecting your unit from overheating and ensuring safe operation.
Key Features
- Automatic reset design — the switch opens when temperature exceeds approximately 155 °F and closes (resets) once it cools to about 55 °F, helping prevent overheating without requiring manual intervention.
- Genuine OEM part from York — ensures proper fit and compatibility with compatible York (and related) furnaces or HVAC units.
- Compact & straightforward installation — designed as a drop-in replacement limit switch for older or existing furnace systems.
- Safety & system protection — helps guard against conditions like overheating, excessive airflow obstruction, or combustion chamber stress by automatically cutting power when needed.
