قطب كهربائي من نوع «Baltur» 53121، 3 - 18 - 0890 150 مم

This part is an electrode from Baltur, listed under the catalogue category for ionization and ignition electrodes. The manufacturer codes are 3-18-0890 and 53121, with a length of 150 mm. Electrodes of this type are consumable components that sit in the flame zone of a burner. Ignition electrodes deliver the spark from the ignition transformer to light the fuel-air mixture; ionization electrodes prove the flame by passing a small rectified current through the flame, which the burner control reads as a flame signal. Both types share the same basic construction—a metal rod surrounded by a ceramic insulator—and are selected by length, bend shape, insulator diameter, gap setting, and mounting flange design. The critical parameter is that the electrode tip must be positioned correctly relative to the burner head or pilot burner to ensure reliable sparking or flame rectification. When replacing an electrode of this kind, check the ceramic insulator for cracks or carbon tracking, and examine the tip for erosion or sooting. Even a slight change in the spark gap can delay ignition or cause nuisance lockouts. The mounting flange must match the burner’s combustion head pattern; the electrode body should fit without forcing, and the lead wire must be intact and properly connected to the ignition transformer or flame signal cable. For gas burners, the ionization electrode circuit is sensitive to earthing and cable condition—any high-resistance joint or damp insulation can mimic a flame-failure condition. Ensure the replacement has the same overall length and bend geometry as the original, as these dimensions determine the electrode’s position in the flame. If the original part number is not legible, measure the insulator diameter and the distance from the mounting face to the tip.