Trane SWT1262 Limit Switch
For service technicians managing high-limit calls on residential or light commercial systems, the Trane SWT1262 Limit Switch is a critical safety component used to prevent burner-induced damage. This OEM Trane Furnace Switch serves as a high-limit safeguard, featuring a fixed 280-degree F open temperature and a 250-degree F auto-reset capability. When the heat exchanger air temperature exceeds safe operating parameters, the normally closed SPST contacts open to interrupt the ignition circuit, preventing thermal stress on the plenum. Designed for reliability in high-cycle environments, this normally closed furnace limit ensures the blower continues to dissipate residual heat until the 250°F reset point is reached. Integrating this high limit temperature switch is essential for resolving four-flash diagnostic codes or short-cycling issues commonly found in Trane and American Standard furnaces. With 1/4-inch quick-connect terminals and a durable Therm-O-Disc construction, this auto-reset thermal switch is the preferred replacement for maintaining precise blower-off and burner-off set points in 120V AC control loops.
Key Benefits
- Precision Thermal Control: Engineered for a strict 280°F (±6) opening and 250°F closing tolerance to protect the heat exchanger from cracks.
- Universal Field Compatibility: A direct OEM replacement part for diverse AUD and TUD series furnaces, replacing older part numbers like SWT01262 and C340056P08.
- Rugged Electrical Specs: Rated for 5.8 FLA and 34.8 LRA at 120V AC, capable of handling 100,000 thermal cycles.
- Easy Installation: Features standard board or surface mounting with pre-plated Ni-Zn terminals to resist corrosion and ensure low-resistance connectivity.
Common Questions
How do I troubleshoot a persistent open limit switch code?
If your furnace is throwing an open limit code, check for restricted airflow first. Dirty filters, collapsed ductwork, or a failing blower motor often cause the temperature to hit the 280°F limit. If the system is cool and the switch lacks continuity, the internal bimetal disc is likely fatigued and requires a replacement Trane SWT1262 switch.
What is the difference between an auto-reset and a manual-reset switch?
The SWT1262 is an auto-reset limit switch, meaning it will automatically close its contacts once the temperature drops back to 250°F. Manual-reset variants require a technician to physically press a button, which is usually reserved for rollout switches rather than primary high-limit safeties.
Can I use this switch in American Standard units?
Yes, because Trane and American Standard utilize the same engineering platforms, the SWT1262 is the factory-authorized limit control for both brands provided the temperature ratings match the original part 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.
Original: $55.05
-65%$55.05
$19.27Trane SWT1262 Limit Switch
For service technicians managing high-limit calls on residential or light commercial systems, the Trane SWT1262 Limit Switch is a critical safety component used to prevent burner-induced damage. This OEM Trane Furnace Switch serves as a high-limit safeguard, featuring a fixed 280-degree F open temperature and a 250-degree F auto-reset capability. When the heat exchanger air temperature exceeds safe operating parameters, the normally closed SPST contacts open to interrupt the ignition circuit, preventing thermal stress on the plenum. Designed for reliability in high-cycle environments, this normally closed furnace limit ensures the blower continues to dissipate residual heat until the 250°F reset point is reached. Integrating this high limit temperature switch is essential for resolving four-flash diagnostic codes or short-cycling issues commonly found in Trane and American Standard furnaces. With 1/4-inch quick-connect terminals and a durable Therm-O-Disc construction, this auto-reset thermal switch is the preferred replacement for maintaining precise blower-off and burner-off set points in 120V AC control loops.
Key Benefits
- Precision Thermal Control: Engineered for a strict 280°F (±6) opening and 250°F closing tolerance to protect the heat exchanger from cracks.
- Universal Field Compatibility: A direct OEM replacement part for diverse AUD and TUD series furnaces, replacing older part numbers like SWT01262 and C340056P08.
- Rugged Electrical Specs: Rated for 5.8 FLA and 34.8 LRA at 120V AC, capable of handling 100,000 thermal cycles.
- Easy Installation: Features standard board or surface mounting with pre-plated Ni-Zn terminals to resist corrosion and ensure low-resistance connectivity.
Common Questions
How do I troubleshoot a persistent open limit switch code?
If your furnace is throwing an open limit code, check for restricted airflow first. Dirty filters, collapsed ductwork, or a failing blower motor often cause the temperature to hit the 280°F limit. If the system is cool and the switch lacks continuity, the internal bimetal disc is likely fatigued and requires a replacement Trane SWT1262 switch.
What is the difference between an auto-reset and a manual-reset switch?
The SWT1262 is an auto-reset limit switch, meaning it will automatically close its contacts once the temperature drops back to 250°F. Manual-reset variants require a technician to physically press a button, which is usually reserved for rollout switches rather than primary high-limit safeties.
Can I use this switch in American Standard units?
Yes, because Trane and American Standard utilize the same engineering platforms, the SWT1262 is the factory-authorized limit control for both brands provided the temperature ratings match the original part 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.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
For service technicians managing high-limit calls on residential or light commercial systems, the Trane SWT1262 Limit Switch is a critical safety component used to prevent burner-induced damage. This OEM Trane Furnace Switch serves as a high-limit safeguard, featuring a fixed 280-degree F open temperature and a 250-degree F auto-reset capability. When the heat exchanger air temperature exceeds safe operating parameters, the normally closed SPST contacts open to interrupt the ignition circuit, preventing thermal stress on the plenum. Designed for reliability in high-cycle environments, this normally closed furnace limit ensures the blower continues to dissipate residual heat until the 250°F reset point is reached. Integrating this high limit temperature switch is essential for resolving four-flash diagnostic codes or short-cycling issues commonly found in Trane and American Standard furnaces. With 1/4-inch quick-connect terminals and a durable Therm-O-Disc construction, this auto-reset thermal switch is the preferred replacement for maintaining precise blower-off and burner-off set points in 120V AC control loops.
Key Benefits
- Precision Thermal Control: Engineered for a strict 280°F (±6) opening and 250°F closing tolerance to protect the heat exchanger from cracks.
- Universal Field Compatibility: A direct OEM replacement part for diverse AUD and TUD series furnaces, replacing older part numbers like SWT01262 and C340056P08.
- Rugged Electrical Specs: Rated for 5.8 FLA and 34.8 LRA at 120V AC, capable of handling 100,000 thermal cycles.
- Easy Installation: Features standard board or surface mounting with pre-plated Ni-Zn terminals to resist corrosion and ensure low-resistance connectivity.
Common Questions
How do I troubleshoot a persistent open limit switch code?
If your furnace is throwing an open limit code, check for restricted airflow first. Dirty filters, collapsed ductwork, or a failing blower motor often cause the temperature to hit the 280°F limit. If the system is cool and the switch lacks continuity, the internal bimetal disc is likely fatigued and requires a replacement Trane SWT1262 switch.
What is the difference between an auto-reset and a manual-reset switch?
The SWT1262 is an auto-reset limit switch, meaning it will automatically close its contacts once the temperature drops back to 250°F. Manual-reset variants require a technician to physically press a button, which is usually reserved for rollout switches rather than primary high-limit safeties.
Can I use this switch in American Standard units?
Yes, because Trane and American Standard utilize the same engineering platforms, the SWT1262 is the factory-authorized limit control for both brands provided the temperature ratings match the original part 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.
