Rheem-Ruud 47-100241-01 Limit Switch

The Rheem-Ruud 47-100241-01 Limit Switch is a critical safety component designed for precise thermal management in HVAC furnace systems. This heavy-duty high-limit control operates with an SPST normally closed switch configuration, ensuring an immediate circuit break when the airstream temperature reaches the fixed 400-degree F open temperature. As a safety roll-out or high-limit protection, it prevents heat exchanger damage and hazardous operating conditions. The manual reset feature is a vital safety requirement, forcing a technician to inspect the system for the root cause of the overheat before the equipment can be cycled back into operation. Engineered for compatibility with Rheem, Ruud, and Weather King furnaces, this 400-degree limit switch utilizes an enclosed disc face and a flanged airstream mounting for secure placement within the plenum or burner compartment. With a 120/230VAC rating and 1/4-inch quick-connect terminals, it is a direct OEM replacement part built to withstand the rigors of high-pressure commercial and residential heating duty cycles.

• Fixed Thermal Protection: Factory-set at 400°F (L400) to ensure reliable over-temperature furnace safety without the risk of setpoint drift.
• Manual Reset Mechanism: Provides positive lockout to ensure system diagnostics are performed after a high-temperature event.
• Rugged Electrical Design: Rated for up to 15A at 120V or 10A at 230V, utilizing transient-resistant SPST normally closed contact surfaces.
• Universal Compatibility: Fits an extensive range of Rheem-Ruud gas furnaces and air handlers, reducing the need for multiple truck-stock variations.
• Standardized Mounting: Features a flanged airstream design for rapid installation and airtight sealing in the furnace cabinet.

Is the 47-100241-01 an auto-reset or manual reset switch?
This is a manual reset switch. Once the 400-degree F threshold is met and the switch opens, it must be physically depressed to close the circuit again, ensuring a technician investigates the cause of the high-limit trip.

Can I use this to replace an older 350-degree roll-out switch?
While this 400-degree switch is frequently used as a direct upgrade or replacement for specific older models, you should always verify the original equipment manufacturer's specified limit for your exact model to maintain the safety integrity of the heat exchanger.

What are the electrical terminal specifications?
The switch features standard 1/4-inch male quick-connect terminals, allowing for a secure, low-resistance connection with standard HVAC wiring harnesses.

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.