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Hollyland Glass & Ceramic Tube Fuses

Hollyfuse glass and ceramic tube fuses are frequently utilized to protect appliances and consumer electronics. As electronic equipment becomes smaller, circuits and components become more delicate and susceptible to damage. Fuses are the preferred method of protection due to their accuracy, compact size, and reliability. They come in a wide range of amp ratings to ensure precise protection. Typically available in various voltage and amp ratings.

Hollyfuse Glass/Ceramic Tube Fuses, available in standard sizes like 5x20mm and 1/4 x 1-1/4 inch, as well as axial fuses, can be easily soldered directly onto PCBs, eliminating the requirement for clips or holders. These fuses hold approvals to meet worldwide safety standards such as UL/CSA, IEC, and PSE. They are employed for primary circuit protection in a wide range of power supplies, chargers, and industrial products. Their applications extend to emerging LED lighting products, as well as various designs for power supplies, battery chargers, and industrial products.

For appliances and consumer electronics, two primary fuse types are commonly used: fast-acting and time-delay. When replacing a fuse, it's crucial to ensure it matches the original. Fast-acting fuses typically consist of a single wire strand or metal strip, while time-delay fuses may feature a coiled wire, a thick wire-wrapped element, or a spring. The voltage and amp rating are often stamped on the end cap of most electronic fuses, aiding in identification. Additionally, the fuse type can usually be visually distinguished. Owner�s manuals typically provide generic identification for the correct replacement fuse.

Overcurrent, Overvoltage, and Undervoltage Protection

An overcurrent protection device safeguards an electrical circuit by interrupting it when the current surpasses a specified level for a certain period. Overcurrent situations can arise from causes such as overloads or short circuits.

Overvoltage, or surges, can result from lightning strikes, or through capacitive or inductive couplings with other electrical systems. Additionally, electrostatic discharge (ESD) can lead to overvoltage conditions.

In instances where the mains voltage drops, undervoltage switches become essential. These devices shut off electrical equipment, machines, and systems when the voltage falls below a critical level, preventing them from restarting automatically after a voltage failure.

Fast-Acting Glass Fuses

These cartridge-style, fast-acting glass fuses open within seconds of being exposed to overloads and short circuits. They're commonly used in instrument panels, small appliance circuits, and automotive accessories. Also called fast-blow glass fuses, they are highly sensitive to changes in current flow and don't tolerate temporary overload currents or power surges.

Time-Delay Glass Fuses

These cartridge-style, time-delay glass fuses tolerate temporary inrush currents without opening, which prevents nuisance-blowing from equipment startups. Also called slow-blow glass fuses, they open to disconnect an electrical circuit when exposed to sustained loads and short circuits.