Lennox 49L03 - (49L0301) Control-Limit, 7" Board Mount, 200°F – High-Temperature Safety Control
Ensure safe and reliable HVAC operation with the Lennox 49L03 (49L0301) Control-Limit, engineered to protect heating equipment from overheating conditions. Designed for 7-inch board mounting, this limit control switch features a fixed temperature cut-off at 200°F, making it ideal for systems requiring precise thermal protection.
Key Features:
- OEM-Grade Quality: Manufactured by Lennox to exact specifications, ensuring compatibility and performance in approved heating systems.
- Temperature Rating: Opens at 200°F to prevent excessive heat buildup, preserving system safety and extending component life.
- Mounting Configuration: Designed for easy installation on 7-inch circuit boards commonly found in Lennox units.
- Automatic Reset: The switch resets once the temperature drops below the threshold, allowing for normal operation to resume without manual intervention.
- Durable Construction: Built to withstand demanding HVAC environments, offering long-term reliability and thermal responsiveness.
Applications:This limit control is typically used in residential and light commercial furnaces and air handlers as a critical safeguard against unsafe operating temperatures.Technical Specifications:
- Part Number: 49L03 / 49L0301
- Function: High Limit Control Switch
- Setpoint: 200°F (Open Temperature)
- Mount Type: 7" Board Mount
- Reset Type: Automatic
- Compatibility: Lennox systems (verify specific unit compatibility via OEM documentation)
Ensure dependable system protection with the Lennox 49L03 Control-Limit — a vital safety component designed to maintain proper heating operation.
Available now at Beenimax.com — your trusted source for genuine Lennox HVAC components.

