Modine 5H0749760003 Limit Switch

When maintaining or repairing Modine unit heaters, ensuring the safety circuit is restored to factory specifications is non-negotiable. The Modine 5H0749760003 Limit Switch is a critical OEM replacement part designed to monitor internal plenum temperatures and prevent thermal overstress within the heat exchanger. This specific auto limit switch is the direct engineering successor to the legacy 5H74976-3, providing a seamless drop-in fit for technicians performing field service. Operating as a normally closed component, it is calibrated to open the electrical circuit when temperatures reach the 190°F upper threshold and automatically reset once the system cools to 150°F. This surface mount limit switch is engineered for high-temperature durability in industrial heating equipment, ensuring that Modine gas-fired heaters operate within safe thermal parameters at all times. By using genuine Modine parts, contractors ensure reliable compatibility and maintain the integrity of the original safety certification for the appliance.

• Universal Compatibility: Serves as the direct replacement for the Modine 5H74976-3, ensuring no modifications are needed during installation.
• Automatic Reset Logic: Features an auto-reset function at 150°F, reducing unnecessary service calls for nuisance trips after a temporary thermal event.
• Precise Thermal Protection: Strictly calibrated to a 150-190°F range to protect the heat exchanger from cracks and heat-related failure.
• Rugged Build Quality: Built for HVACR professionals who require components capable of withstanding the high-cycle demands of commercial environments.

Is the 5H0749760003 a manual or automatic reset switch?
This is an automatic reset limit switch. It will automatically re-close the circuit once the sensed temperature drops to the 150°F reset point.

Can this switch replace the 5H74976-3?
Yes, the 5H0749760003 is the direct OEM replacement and is designed to fit the exact footprint and electrical requirements of the older part number.

What mounting type does this limit use?
This is a surface mount style switch, typically fastened directly to the heater housing or plenum for accurate temperature sensing.

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.