170M1571D

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170M1571D is a dual element time delay and current limiting Class L fuse designed for use in low voltage circuits. Class L fuses provide overload protection and they are most commonly used to protect equipment in residential and commercial applications, but they can also be used in industrial applications as well.

The 170M1571D is composed of two basic parts: an electric current sensing element and a thermal time delay element. The current sensing element is the "fast-acting" circuit breaker that immediately detects and interrupts any current overloads. The thermal time-delay element consists of a pellet of material, such as an alloy, which melts at a predetermined temperature. This thermal element prevents the fuse from interrupting the circuit from normal starting and motor inrush currents.

The 170M1571D is a dual element fuse which has a current rating of 15 amperes and a time delay rating of 71 seconds. This allows the fuse to protect equipment from short circuit or overload currents, while providing enough time for any current inrush to be dissipated. Additionally, the fuse can differentiate between inrush and overload currents, allowing it to protect the equipment from both.

The 170M1571D is typically used in residential and commercial applications, where it is used to protect equipment and reduce the risk of fire. It is also frequently used in industrial applications, where it is often used to protect motor circuits and other electrical equipment with a large inrush current. Additionally, it is used to protect generator and transformer circuits, control panels, switchgear, and other low voltage applications.

When the current through the 170M1571D exceeds its rated value, the fast-acting circuit breaker element immediately interrupts the circuit, preventing the fuse from being damaged by the current. The thermal delay element then melts to ensure that any normal starting and motor inrush currents are allowed to dissipate without interrupting the circuit. If the overload persists, the fuse will eventually interrupt the circuit, protecting the equipment from potential damage.

In conclusion, the 170M1571D is a dual element time delay and current limiting Class L fuse used to protect equipment from short circuit and overload currents, while providing enough time for any current inrush to be dissipated. This fuse is commonly used in residential and commercial applications, but can also be used in industrial applications depending on the requirements of the application.

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