Glass Fuse 30A 250 Volt 5x20mm

The 5x20mm glass fuses are small cylindrical fuses used to protect electrical and electronic circuits from overcurrent. They are named after their dimensions: a diameter of 5mm and a length of 20mm. Inside the transparent glass tube, a wire or metal strip melts when the current exceeds a certain limit, breaking the circuit and preventing equipment damage.

General Features:

• Size: 5mm diameter x 20mm length
• Body Material: Transparent glass (internal element visible)
• Internal Element: Melting wire or strip
• Rated Current: Typically available from 0.05 Amp to 15 Amp
• Rated Voltage: 250 Volt AC or 125 Volt AC (depending on the model)
• Response Type: Fast Blow: Quickly interrupts the circuit during sudden overcurrent; Slow Blow (Time Delay): Withstands short-duration current surges before opening

Applications:

• Electronic devices (TVs, power supplies, sound systems)
• Industrial control panels
• Chargers and small household appliances
• Medical and laboratory equipment

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Advantages:

• Space-saving due to small size
• Easy to replace
• Visual inspection capability (through transparent glass tube)
• Cost-effective protection solution

Installation:

They are installed using fuse holders or fuse clips. Some versions are suitable for mounting on a PCB (Printed Circuit Board).