Eaton Bussmann anti-surge ceramic cartridge fuses are designed to prevent damage to electrical equipment. These fuses allow an electric current to flow through until the current goes over the fuse's rating then it will blow and stop the flow of electricity. This range of ceramic cartridge fuses is 5 x 20mm with a T speed rating.

Why choose ceramic cartridge fuse?

Ceramic and glass cartridge fuses have similar properties. The capacity of a ceramic cartridge fuse is higher than other fuses, which means that ceramic fuses can be used in circuits that have a higher current rating. They are perfect for protecting against overheating.

What size is it?

5x20 mm is a standard cartridge size and it measures approximately 20 mm long by 5 mm in diameter. They are popular in board and panel protection and will fit a compatible 5x20 mm fuse holder.

What Speed is it?

This particular fuse is “T” speed rated which means it is a slow acting fuse, sometimes referred to as anti-surge. It is able to tolerate higher levels for a short period, without shorting. Therefore, if a sudden change occurs, this fuse will not blow immediately. They are suitable for applications where a sudden flow of high current is required.

What voltage is it?

These cartridge fuses are available with 0.5 to 12 Amp current ratings for applications where the system voltage rating is 250 Volts AC.

What is Breaking Capacity?

Breaking capacity is the level of current that the fuse can safely handle without exploding or breaking. The breaking capacity of your fuse should be greater than the fault current of your electronic circuit.

What are cartridge fuses used for?

• For the protection of components and equipment from costly damage used by over-current
• To isolate sub-systems from the main system once a fault has appeared

What is an overcurrent?

It is a setting where a circuit experiences a current that is higher than the normal operating current.

This time-delay ceramic tube fuse from the S505 series delivers a reliable interrupting current rating at 250V, accommodating a rated current of 5A. Its typical pre-arcing voltage drop is measured at 72 mV, ensuring efficiency and performance under specified conditions. Constructed with nickel-plated brass end caps and complying with RoHS regulations, this fuse exemplifies quality in electrical circuit protection.

• Time-delay function prevents nuisance blowing
• High breaking capacity for enhanced safety
• Ceramic construction withstands high temperatures
• Halogen-free, RoHS compliant for environmental safety
• Compact design ideal for limited space applications

• Used for protection in LED and general lighting setups
• Ideal for circuits involving printers and peripherals
• Suitable for appliances and white goods
• Effective in power supply applications
• Provides safety for test equipment and devices

Yes, it is suitable for protecting LED lighting applications.

The operating temperature ranges from -55 °C to +125 °C.

Eaton formerly known as Bussmann