170M3955

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Electrical fuses are safety devices added to circuits in order to reduce the risk of overheating, sparks, and fires. Fuses are made from materials like copper, nickel, and steel, and come in various shapes and sizes. Specialty fuses such as the 170M3955 are designed to be used in certain applications such as motor control applications.

The 170M3955 is a Type G medium Time-delay Dual-Element Fuse, rated at an AC voltage of 48-600V and an AC current of 8A-350A. It is also UL- and CSA-listed, which is an indication of the fuse’s levels of protection and safety. It features a dual-element design, meaning there are two paths of current through the fuse. The first is the series-trip element, which is designed to detect an overload or short circuit current with an inrush or locked rotor type current. The second is the parallel-flow element, which provides protection against burning out due to an overload or short circuit.

The purpose of the 170M3955 fuse is to protect electrical circuits and components, such as motor controls and circuits, from being damaged by an overload or short circuit. The fuse is designed to detect and stop hazardous electrical currents that can cause heat, sparks, and exposed wires. It is also designed to protect the motor controls from mechanical damage due to bearings seizing or gears wearing.

The working principle of the 170M3955 is relatively simple. When an increase in current flows through the fuse, it causes the metal strip in the fuse to heat up and eventually melt. When the fuse melts, it creates an open circuit and breaks the connection, thus stopping any further flow of current. The fuse is designed in such a way that the length of time between an overload current and the fuse melting is adjustable. This feature ensures that single-phase and three-phase motor circuits are protected for optimal motor protection.

Overall, the 170M3955 is an excellent specialty fuse that provides effective protection against overloads and short circuits. It is UL- and CSA-listed, making it safe and reliable for a variety of motor control applications. The dual-element design ensures that both overloads and short circuits are detected and stopped, while the adjustable time-delay feature adds an extra layer of protection for single-phase and three-phase motor circuits.

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