MERSEN FERRAZ X300055 PC30UD69V200TF Fuse Link, 690VAC, 200A, TTF Threaded Terminal

Mersen Ferraz X300055 fuse safeguards sensitive equipment and circuits from overcurrents or short circuits. This fuse is ideal for power distribution systems, industrial machinery, renewable energy installations and electric vehicles. By promptly interrupting excessive currents, it prevents damage and potential hazards, ensuring operational reliability and minimising downtime.

Working Mechanism:

• When the current passing through the fuse exceeds its interrupt capacity due to a short circuit or overcurrent event, the fuse element rapidly heats up. As the temperature rises, the element melts or vaporises, creating an open circuit and interrupting the flow of current.
• This interruption prevents excessive current from reaching downstream components, equipment or circuits. The fast action of the fuse prevents damage to the system and potential hazards like fires or electrical failures.

Frequently Asked Questions:

Q. How can I determine the current rating of a fuse?

A. The current rating is determined by the physical characteristics and material properties of the fuse element. It indicates the maximum current the fuse can safely carry without tripping under normal operating conditions.

Q. What is the difference between fast-acting and time-delay (slow-blow) fuses?

A. Fast-acting fuses act quickly to overcurrent events and time-delay fuses are engineered to tolerate short-duration overcurrents, such as those that occur during motor startup, without tripping.

Q. What considerations should be made for selecting the correct fuse?

A. Factors like the load current, inrush current during startup, ambient temperature and the specific application's requirements influence the choice of fuse size.