Fuse 5x20 6, 3at De Dietrich 7893299

This 5x20 mm fuse rated at 6.3 A (slow-blow) provides overcurrent protection for electrical circuits in boilers and burners. It safeguards sensitive components like control boards and sensors from damage due to power surges or faults. The glass tube design allows for easy visual inspection, and the standard size ensures compatibility with common fuse holders in heating systems.