Kromschroder Spark ignition electrode ZSI-300/50 74462421

Kromschroder spark ignition electrode ZSI-300/50 (SKU 74462421) is a 300 mm long electrode made of a special heat-resistant alloy. It provides ignition sparks for Kromschroder ZSI series pilot burners. The electrode has precise geometry, matched for the ZSI-300/50 burner. It is built to withstand high heat and resist corrosion.

Electrodes of this class are selected by matching the rod length and bend angle, insulator diameter and material, electrode gap (tip to burner earth), and mounting flange pattern to the burner head. They are shaped for a specific burner series, so the correct part keeps the spark tip at the right position relative to the nozzle or pilot outlet. Before installing, compare these dimensions with the old electrode. After fitting, inspect the ignition transformer and wiring, and confirm the gap matches the burner manufacturer's specification.

Typical failure modes for this kind of electrode include erosion of the metal tip, cracking of the ceramic insulator from thermal shock, carbon sooting that bridges the gap, and gradual bending or gap drift. These weaken the spark or flame signal, causing difficult ignition or unstable flame detection. During troubleshooting, examine the electrode for these faults, and check the ignition transformer and wiring.