0287025.L

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A fuse is an electrical protective device that features a fused element that will melt when excessive current passes through it, thereby interrupting the current in order to protect the circuit. The 0287025.L is a specific type of fuse that is designed for use in specialty applications, and understanding its field of application and how it works is important for anyone working with electrical systems.

Field of Application

The 0287025.L is a specialty fuse that is used in Life-Safety Systems such as fire alarms, smoke alarms, fire extinguishing systems, and sprinkler systems. It is verified to UL 277 & UL 60269-2 standards, making it a reliable option in these applications. Additionally, due to its construction, it is also a great choice for industrial electrical applications, such as for instrumentation, pumps, and motors.

Interrupting Rating

The interrupting rating is an important factor to consider when choosing a fuse, and the 0287025.L has a low interrupting rating of 300A. This means that it is only suitable for applications with low current loads. If the current exceeds this rating, the fuse will melt and interrupt the circuit.

Construction

The 0287025.L is constructed out of ceramic-reinforced phenolic material. This material is heat-resistant and durable, allowing the fuse to withstand high temperatures. The body also features silver-plated brass contacts on both ends, which ensure a secure connection and good electrical conductivity. The fuse also features a stainless steel wire element, which is designed to melt when excessive current passes through it.

Voltage Rating

The 0287025.L has a voltage rating of up to 300V, which is suitable for most applications. However, it is important to pay attention to the nominal voltage of the system in order to determine the correct size of the fuse. If the voltage exceeds the fuse’s ratings, then the fuse may not be able to protect the circuit from overloads.

Timing Characteristics

The 0287025.L features a time-delay characteristic that is designed to prevent nuisance trips. This means that if there is a momentary surge in current, the fuse will delay the tripping of the fuse so that it does not interrupt the circuit. The delay time of the fuse is determined by the size of the current. Generally, larger current will cause a longer delay.

Size and Capacity

The 0287025.L is a small fuse, measuring just 0.5” x 0.5”. Despite its small size, it has a high capacity of 25 Amp, making it suitable for a range of applications. It is also available in a wide range of amperages, ranging from 1amp to 600amperes, making it a great option for both small and large systems.

Working Principle

The 0287025.L fuse works on the principle of choosing the correct size and rating, depending on the dimensions of the circuit being protected. When the system exceeds the approved rating, the element inside the fuse will melt due to the increased current, thereby interrupting the circuit and protecting it from overloads. In order for the fuse to work correctly, it is important to choose the correct size and rating for the system being protected.

Conclusion

The 0287025.L is a specialty fuse that is designed for use in life-safety systems and also for industrial electrical applications. It has a low interrupting rating of 300A and can handle up to 300V. Additionally, it features a time-delay characteristic that prevents nuisance trips. Its small size and high capacity make it a great choice for a wide range of applications. Understanding its field of application and working principle is important for anyone working with electrical systems.

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