Eaton 800mA T Ceramic Cartridge Fuse, 5 x 20 mm

This cartridge fuse is a ceramic, time-delay component designed to protect electronic and electrical circuits from overcurrent events in industrial and automation environments. It operates at low current levels for controlled circuit protection and is suitable for designs requiring delayed response to transient surges. The device is appropriate for use where a slow-clearing fuse characteristic helps prevent nuisance interruptions while safeguarding downstream components.

• 800mA rating provides precise low-current protection
• 250V voltage rating supports common AC and DC systems
• Time-delay characteristic allows temporary surge tolerance
• 5x20mm profile fits standard cartridge holders
• Ceramic body sustains performance across temperature extremes
• T-rated speed ensures consistent slow-blow behaviour

• Suitable for protecting control electronics in automation panels
• Ideal for power supplies in industrial instrumentation
• Used for safeguarding sensors and small actuators
• Can be used for maintenance spares in electrical cabinets
• Suitable for retrofitting into 5x20mm fuse assemblies

It is specified to operate between -55°C and 125°C, allowing use in environments with significant thermal variation.

The fuse uses a ceramic tube with silver-plated endcaps for lower-current units, which improves heat dissipation and contributes to its high breaking capacity.

Typical pre-arching energy and voltage-drop characteristics determine how the fuse behaves during fault initiation, informing coordination with upstream protective devices.

Lead diameters differ for higher ratings and an optional fluoropolymer sleeve with VW-1 flammability rating can be fitted for insulation and safety in confined assemblies.

Eaton formerly known as Bussmann