Kromschroder Electrode FZE300 74434610

The Kromschroder FZE300 electrode (SKU 74434610) is an ignition and ionization electrode for gas burners, with a length of 300 mm. It serves dual functions: delivering the spark to ignite the fuel and proving the flame by passing a small rectified current through it. This electrode is resistant to soot, which helps maintain performance in the flame zone. It is designed for use in burner control systems, connecting to the ignition transformer and burner control board.

When selecting a replacement electrode of this type, physical dimensions must match the burner's combustion head or pilot burner assembly, including electrode length, bend angle, insulator diameter, spark gap, and mounting flange configuration. The electrode must be positioned correctly relative to the burner nozzle or pilot burner to ensure proper gap and alignment. Before ordering, compare these measurements with the existing part and verify the mounting seal is intact.

Typical failures include erosion or bending of the tip, cracks in the ceramic insulator, carbon sooting that shorts the spark, and a drifting spark gap that lengthens ignition time or prevents flame proving. When these occur, the burner may fail to ignite or the flame signal may be lost, leading to lockout during the safety time. Check the electrode's condition, the burner head, and the ignition transformer output when such symptoms appear.