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This 24VAC HVAC transformer is built for longevity in high-duty cycle applications where electrical isolation and voltage stability are non-negotiable for system uptime
preventing motor overheating and premature winding failure due to out-of-spec electrical oscillation
effectively cutting power to the heating element when the preset temperature is achieved
What causes this blower wheel to fail
Backwards Compatibility: Certified to replace older York rollout switch part numbers
Trane SWT1280 Limit Switch This 24VAC HVAC transformer isThe Trane SWT1280 Limit Switch is a high reliability OEM thermal protection component specifically engineered for HVAC furnace safety and consistent air handler performance. This 3" insert limit switch serves as a critical fail safe, monitoring supply plenum temperatures to prevent equipment damage. It is factory calibrated with a 155F opening point and an automatic reset that closes the circuit at 125F. For field technicians, the SWT1280 is identical
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