Modine 5H0750020002 Roll-Out Switch

The Modine 5H0750020002 Roll-Out Switch is the primary safety interface for Hot Dawg HD unit heaters, engineered to detect abnormal thermal conditions within the burner manifold. Operating as a L250F thermal limit switch, this component features a factory-set 250°F trip point to prevent hazardous operation during flue blockages or heat exchanger failures. As a direct OEM replacement part for legacy numbers 5H75002-2 and 5H75002, it ensures seamless mechanical and electrical integration into the safety chain. This spst manual reset switch is specifically calibrated for Modine HD30, HD45, HD60, and HD75 residential and commercial gas-fired heaters. When burner flames deviate from the heat exchanger inlet, this limit control interrupts power to the gas valve, necessitating a manual inspection and reset to maintain system integrity. For a reliable furnace rollout switch replacement, technicians trust this genuine Modine component to restore factory-spec safety parameters and prevent repeat high-limit tripping.

• Precise 250°F Calibration: Features a fixed L250F temperature rating specifically tuned for the airflow and combustion characteristics of Modine HD series heaters.
• Universal Direct Fit: Serves as the official replacement for 5H75002-2, eliminating the need for mounting bracket modifications in older gas fired unit heaters.
• Critical Fire Prevention: Provides essential protection against flame rollout caused by obstructed vents, cracked heat exchangers, or insufficient combustion air.
• Manual Safety Restart: The manual reset design requires a technician to investigate the underlying cause of the trip before the system can be re-energized.

• Which heater models use this switch? This Modine 5H0750020002 is designed for the Hot Dawg HD30AH, HD45AH, HD60AH, and HD75AH power-vented units.
• Why does my rollout switch keep tripping? Frequent roll-out switch tripping usually indicates a blocked flue, dirty burners, or a compromised heat exchanger—all of which lead to heat backing out of the burner box.
• Can I use a generic limit switch instead? To maintain AER compliance and equipment safety, always use the OEM Modine flame rollout switch to ensure the trip temperature matches the original equipment specifications.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.