0235.300VXP

Fuses

Fuses are an important part of electrical systems, providing a means for circuit protection by interrupting the current flow when it is too great. A 0235.300VXP fuse is a type of field-selectable fuse that provides basic overcurrent protection, as well as additional features such as interruption time, thermal performance, and increased current ratings.

Application Field

The 0235.300VXP fuses are designed for general purpose protection in industrial control and power applications, from 1A to 25A. They are UL recognized and CSA certified and can be used in a variety of industrial applications including motor control, distributed control, and process control.

Working Principle

The 0235.300VXP fuses are a field-selectable fuse, allowing the user to select the desired fuse rating and time/current characteristic. All versions use a pressure-sensitive heat-activated element to sense and respond to overload or overcurrent conditions. This element is constructed of an electrically active material that exhibits a negative temperature coefficient of resistance. This resistance decreases as the temperature increases due to the current flowing through the element.

When a short circuit or overload condition is sensed, the temperature of the element increases rapidly, causing an increase in the resistance of the element. This resistance increase causes a portion of the current to be diverted from the circuit, reducing the current in the circuit and thus preventing damage due to overheating. The fuse will then open, interrupting the current flow in the circuit and allowing the system to reset.

The 0235.300VXP fuse is designed with a second sensing element that provides high interrupting capacity protection. This element is designed to sense a high inrush current to the switch. The second element provides protection in the event of a higher than expected current flow due to an arcing contact. When this condition is detected, the second element will open, allowing the system to reset.

Conclusion

The 0235.300VXP is a highly effective fuse for industrial applications, providing fast, reliable overcurrent protection. Its design enables it to provide protection against both overloads and higher current inrush conditions, ensuring the safety and performance of the system. The ease of field-selectable ratings also makes it an ideal choice for many applications.