TR1/6125TD1.5-R Circuit Protection

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TR1/6125TD1.5-R is a gas discharge tube (GDT) operated current-limiting fuse used in overcurrent protection applications. It is designed for mounting in normal or disconnect mode in snap-in type fuseholders and disconnects. The TR1/6125TD1.5-R is an open fuse holder, and its internal construction includes a solid secondary lead and a resistor connected to the terminals.The TR1/6125TD1.5-R provides reliable overcurrent protection in such areas as electric motors, air compressors, and power strips. It is also suitable for use in instrumentation and medical equipment.The TR1/6125TD1.5-R provides current limitation in two stages. First, the fuse contacts open when the current reaches the initial melting current value, allowing the arc forming gas in the GDT tube to start to flow. Then, as the current increases, further arc formation is suppressed. This allows the fuse to act as a slow blow fuse, providing additional time for the protective device to be activated.The operating principle of the TR1/6125TD1.5-R is based on the gas discharge tube\'s thermal and electrical properties. When an overcurrent situation occurs, the fuse contacts open, allowing arc forming gas in the tube to flow. This causes a thermal contraction within the tube, resulting in a decrease in the resistance of the GDT. This in turn causes a decrease in the voltage drop across the GDT, allowing more current to flow through the tube. The current flowing through the tube will eventually increase to such an extent that the arc formed by the gas is suppressed. This limits the current flowing through the fuse to a predetermined maximum level ensuring the safety of the system.In addition to providing reliable overcurrent protection, the TR1/6125TD1.5-R also reduces peak inrush current, which is critical in ensuring the safe operation of systems such as medical equipment and instrumentation. By reducing peak current, the fuse helps to reduce the risk of system damage in the event of an overload.In summary, the TR1/6125TD1.5-R fuse is designed for reliable over current protection in various devices and system. It uses the gas discharge tube\'s thermal and electrical properties to limit the current to a predetermined maximum level, reducing the risk of system damage due to overloads.

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