BASO Gas Products B04S-1E408 Silicon Carbide Hot Surface Ignitor

The BASO Gas Products B04S-1E408 Ignitor is a hot surface ignition component used in gas-fired heating equipment to initiate burner combustion. It operates through a silicon carbide heating element that rapidly reaches combustion temperature when energized by a 120 VAC control circuit, allowing fuel gas to ignite safely and consistently. It is commonly installed in furnaces, boilers, and rooftop units as part of the ignition assembly that signals and enables burner startup. It works as a key switching part within the gas control sequence, ensuring proper light-off during heating operation in HVAC systems.