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A fuse holder is a small but crucial spare part in boiler and burner control systems, protecting sensitive electronics from power surges. It securely houses the fuse that safeguards the control board and other electrical components. Over time, fuse holders can become brittle or corroded, leading to poor contact and intermittent faults. Replacing a faulty fuse holder is a simple fix that restores reliable protection to your heating system. This component is commonly used in various boiler and burner models and is an important part of any boiler spare parts inventory for maintenance and repair.