The Reznor 201962 Limit Switch is a high-temperature safety control engineered for precision in commercial HVAC unit heaters. This OEM Reznor 201962 component features a calibrated 170-250F temperature range and an auto-reset function, ensuring the system resumes operation once internal temperatures return to a safe threshold. Designed for industrial gas-fired heaters, it serves as an essential SPST limit control, specifically replacing worn or failing switches in Reznor UDBP300, UDBS300, UBX300, and UBZ300 series models. Built by Nortek for the Reznor brand, this 250-degree high-limit switch is identified by its distinct orange dot, signifying the critical cutout point necessary to prevent heat exchanger damage or unsafe operating conditions. For technicians, the Reznor replacement limit switch provides a drop-in solution for maintaining heater performance during peak demand, offering a durable 36T auto reset switch construction that stands up to the thermal cycling of heavy-duty heating cycles. Replacing a faulty Reznor heater limit switch with a verified match ensures the safety of the entire installation and minimizes downtime. Key Benefits Precision Safety: Calibrated for 170°F to 250°F operation to effectively manage thermal limits and protect the heat exchanger. Automatic Recovery: Features an auto-reset mechanism that restores heater functionality without manual intervention after cooling. OEM Compatibility: Specifically designed for Reznor UD series heaters, including common models like the UDBP300 and UBX300. Industrial Durability: Robust SPST construction engineered to withstand the demanding environments of commercial and industrial workspaces. Common Questions What does the orange dot on the Reznor 201962 signify? The orange dot is a technical identifier indicating that this specific switch is rated for a 250°F high-limit threshold, which is critical for matching the manufacturer's safety specifications for the 300-series units. Which Reznor heater models are compatible with this limit switch? The Reznor 201962 is the primary replacement for UDBP300, UDBS300, UBX300, and UBZ300 gas-fired unit heaters. Always verify the part number in your technical manual before installation. Is this a manual or automatic reset limit switch? This is an auto-reset limit switch. It will automatically close the circuit once the sensed temperature drops below the reset differential (approximately 170°F), allowing the heater to resume its duty cycle. 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.
