0JTD1.25T

A 0JTD1.25T fuse is a type of special low voltage fuse. It is widely used in aviation, electronics, military, rail transport, telecommunications and other fields with high requirements for low voltage. This type of fuse is usually in the form of an annealed flat wire, and its main feature is that the fuse can be connected to the wiring harness to protect the equipment from overcurrent or short circuit.

Application field

A 0JTD1.25T fuse can be used in the following application areas with low voltage:

• Aviation, such as military aircraft.
• Telecommunications, such as telephone, network communication systems, and mobile communications.
• Electrical equipment, such as electric vehicles, switchgear and control equipment.
• Military, such as land base radar and sonar.
• Heavy-duty transportation, such as railway systems and ships.
• Electrical and electronics, such as medical equipment, radiography, and machine tools.
• Renewable energy, such as photovoltaic systems and wind turbines.

Working principle

The 0JTD1.25T fuse works by using the electrical resistance of a flat wire. It uses resistive heating to melt when the current excceeds its rated value in order to open an electrical circuit. In normal operation, the fuse\'s resistance is low, and the current is allowed to flow. When the current exceeds the rated value, an excessive amount of heat is generated in the fuse due to the resistance. The heat is transferred to the fuse material which melts and opens the circuit, interrupting the current. This effect is known as a thermal fuse.

The 0JTD1.25T fuse is designed to allow high inrush current loads, such as when a motor starts. This is made possible by the production of a narrow time-delay curve, where a relatively high peak current is allowed to pass for a short period of time. This allows the motor to start without tripping the fuse.