Trane FUS1329 Fuse Link

The Trane FUS1329 is a critical safety component designed for thermal overload protection in high-performance HVAC systems. This 104C/218F open fuse link operates as a non-reversible thermal cutoff, breaking the electrical circuit when internal system temperatures exceed the 218°F threshold. Rated for 5 amps at 250V, this OEM Trane replacement part is essential for safeguarding expensive components like control boards, compressors, and fan motors from permanent heat damage and overcurrent events.

As a non-indicating fuse, the FUS1329 provides a reliable "open" state once triggered, ensuring the equipment stays powered down until the underlying fault is addressed. These HVAC fuse links feature durable ceramic bodies and spade connectors for secure integration into existing wiring harnesses. Often used in Trane furnaces and light commercial air handlers, this part serves as a direct rollout switch equivalent in specific furnace safety loops. Maintaining a 5-pack on your service truck ensures you have the genuine Trane parts needed for immediate field repairs.

• High-Precision Cutoff: Opens exactly at 218°F (104°C) to prevent terminal equipment failure during a rollout or overheating event.
• OEM Compatibility: Designed specifically for Trane HVAC systems, ensuring correct fitment and electrical resistance properties.
• Reliable Overcurrent Defense: Rated for 5A / 250V applications, providing essential circuit protection for control-level voltage.
• Standardized Connectivity: Equipped with spade connectors for fast, point-to-point replacement without custom terminal work.

Is the FUS1329 a resetable breaker?
No, this is an open fuse link. Once the internal element melts due to temperatures hitting 218°F, the part must be replaced to restore system operation.

Can I use a higher amp fuse to prevent nuisance trips?
You should never exceed the manufacturer's 5A rating. Doing so bypasses the safety limits intended to protect the 24V or 120V control circuit.

What causes this fuse link to blow?
Typically, a blown thermal fuse indicates a heat exchanger issue, high limit excursion, or restricted airflow causing internal temperatures to climb.

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.