Eaton 400mA T Glass Cartridge Fuse, 5 x 20mm

This range of glass cartridge fuses from Eaton Bussmann is ideal for providing protection to devices or internal circuits from short circuits and overcurrent. They are deliberately weaker components which, when too much current is drawn, will blow. Once the fuse has blown it will need replacing in order to make the circuit complete and allow the flow of current.

Why choose a glass cartridge fuse?

Glass and ceramic fuses have similar properties. However, you may choose a glass cartridge fuse as it enables you to see the inside of the fuse. Therefore it is easier to determine whether the fuse has blown.

What size is it?

5 mm x 20 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 5 x 20 mm fuse holder.

What voltage is it?

These cartridge fuses are available with 40mA to 15 Amp current ratings for applications where the system voltage rating is 250 Volts AC.

What Speed is it?

This particular cartridge 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 is Breaking Capacity?

Breaking capacity is the level of current that the fuse can safely handle without exploding or rupturing. The breaking capacity of your fuse should be greater than the fault current of your electronic circuit. This particular cartridge fuse is LBC (Low Breaking Capacity).

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

This fuse from the S506 series offers high performance with a 250V AC voltage rating and a current rating of 0.400A. It has an interrupting rating of 35A at rated voltage, ensuring reliable operation under fault conditions while maintaining a compact 5x20mm size for easy integration.

• Time-delay design prevents nuisance blowing during surges
• Glass body construction provides visibility for easy inspection
• Nickel-plated brass end caps enhance conductivity and durability
• Compliance with international standards ensures dependability
• Optional axial leads available for versatile installation

• Automation control panels for overcurrent protection
• Consumer electronics requiring low breaking capacity
• Lighting circuits in residential and commercial settings
• Industrial equipment to safeguard electronic components
• Modern appliances for safety compliance

Yes, it operates effectively between -40°C and +125°C.

The cold resistance is 0.31Ω.

It has approvals from cURus, VDE, BSI, SEMKO, and CCC.

Eaton formerly known as Bussmann

VDE, BSI, UL