Reznor 257665 Ignition Cable 326010-701 The Trane CNT3780 Limit Switch

The Trane CNT3780 Limit Switch is an essential safety control engineered for high-performance HVAC and refrigeration equipment

Operational Consistency: Replaces noisy or seized combustion blower motors to restore quiet operation and reliable pressure switch closure

it requires appropriate 3-inch flange gaskets (typically two per valve) to ensure a proper seal against mating piping

helping maintain system integrity and performance

Reznor 257665 Ignition Cable 326010-701 The Trane CNT3780 Limit SwitchThe Reznor 257665 Ignition Cable is a critical 18 inch high tension lead designed for reliable spark delivery in gas fired unit heaters. Engineered for high temperature environments, this HVAC ignition wire features heavy duty insulation to prevent voltage leakage and electromagnetic interference (EMI) that can disrupt flame rectification signals. As a direct Reznor replacement part, it ensures precise fitment and continuity between the ignition