White-Rodgers 3L02-160 Limit Switch

The White-Rodgers 3L02-160 Limit Switch is a professional-grade 3/4" snap disc limit control engineered for high-limit safety applications in furnace and blower systems. This SPST (Single Pole Single Throw) switch is designed to open on temperature rise at a fixed setpoint of 160°F (71°C), providing critical overheat protection for the heat exchanger. As a manual reset limit switch (Therm-O-Disc Style 60T15, Type 330534), it requires physical intervention once tripped, ensuring a technician can inspect the system for airflow restrictions or mechanical failures before resuming operation. The flanged airstream mount configuration allows for precise sensing within the plenum, while the universal mounting holes facilitate quick on-job replacement. Built for durability in HVACR environments, this 160F cutout limit control handles electrical loads up to 10A at 120VAC and 5A at 240VAC, making it a reliable OEM replacement part for maintaining furnace safety standards and preventing component damage from excessive heat accumulation.

• Critical Safety Protection: Open-on-rise action at 160°F prevents the heat exchanger from reaching dangerous temperatures.
• Manual Reset Mechanism: Ensures thorough system inspection after a trip occurs, preventing repetitive cycling in unsafe conditions.
• High Compatibility: This Therm-O-Disc style 60T15 control is a versatile drop-in replacement for various residential and commercial heating units.
• Professional Construction: Features 1/4" quick-connect terminals and a flanged mounting design for secure installation in high-airflow areas.
• High Electrical Rating: Rated for pilot duty (125 VA) and motor loads, providing robust performance across different control voltages.

• How do I know if the limit switch has tripped? If your furnace blower is running continuously but the burners will not ignite, the 3L02-160 may have opened. Check for continuity across the terminals; if the circuit is open at room temperature, press the manual reset button.
• Can I replace an automatic reset switch with this manual reset model? Manual reset switches are safety devices. While they can often replace automatic models to provide stricter safety monitoring, always verify the 160F cutout temperature matches your system's original equipment specifications.
• What causes this limit switch to trip frequently? Common causes include dirty air filters, a failing blower motor, or blocked ductwork, all of which restrict airflow and cause the internal temperature to exceed the 160°F limit.

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.