Cylindrical glass miniature fuse 5X20 T 400 MA/250V 006710043

Precise protection of electronic circuits

The miniature 5x20 mm glass cylindrical fuse with a slow-blow T characteristic and a rated current of 400 mA provides reliable protection for delicate electronic circuits against overload and short circuits. The glass construction allows for visual inspection of the fuse status, and the optical trip indicator enables rapid identification of a damaged component.

Design and technical parameters

The fuse with a rated voltage of 250 V and a current of 0.4 A features a slow-blow trip characteristic, making it an ideal solution for circuits containing devices with high inrush currents—such as motors, transformers, or switching power supplies. The glass body not only provides an aesthetic appearance but, above all, enables immediate visual diagnostics of the fuse element's condition.

The compact 5x20 mm dimensions allow for mounting in standard cylindrical fuse holders, widely used in both professional and hobbyist electronics. Compliance with the CN standard 85361010 guarantees international compatibility and manufacturing quality.

Application and compatibility

The product is used in a wide spectrum of electronic applications—from switching power supplies and motor controllers to measuring instruments and industrial automation. The T slow-blow characteristic performs particularly well in circuits with filtering capacitors and pulse transformers, where the initial inrush current can many times exceed the nominal value.

The miniature dimensions make this model a popular choice in audio-video equipment, computers, and telecommunications devices. The glass body allows for easy servicing—a damaged element is immediately visible without the need to dismantle the entire system.

Logistic parameters

Fuses are packed in units of 10 pieces per individual package. Each package contains a unique EAN code 3838895452775, enabling precise product identification in warehouse systems.

The product is covered by the full responsibility of the manufacturer ETI POLAM Sp. z o.o., a Polish leader in the production of electrical apparatus with many years of experience in the electrotechnical industry.