250NHG3B-690

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Part Status:	Active

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250NHG3B-690 Fuses: Application Field and Working Principle

Fuses are conveniently-sized equipment designed for overcurrent protection. They serve to interrupt the continuity of overloaded electric circuits by melting an internal element (fusible element), which then opens the circuit completely, so that malfunctioning or short-circuit current flows cease in the shortest possible period of time. The 250NHG3B-690 fuse is a type of high loc-on fuse designed to meet the safety regulations of the European Community. This fuse is designed for circuit protection in residential, industrial, and commercial applications. It is commonly used to protect appliances, switches, circuit breakers, and other electrical systems along with 250 NH G6. It is available in two different versions: standard and time-delay. The standard version is designed for instantaneous protection of electrical systems. The standard version is able to interrupt a variety of current levels, while the time-delay version has a reaction time of 1-10 seconds, which enables it to protect current-sensitive circuits that take a few seconds to respond, such as home appliances. This type of fuse has a maximum visible fault current of 60 kA (IP20) and a maximum power dissipation of 8 W. It is composed of an insulating base, metal terminals, a fuse blade, and a replaceable fuse element. The fuse blade is made of a high conductivity metal and acts as a bridge between the two terminals. The fuse element is encased in a ceramic cylinder and is composed of a weak metal alloy strip that melts when overloaded.The fuse element is capable of reacting quickly to an overcurrent situation thanks to its low melting point. When an overcurrent situation is detected, the fuse element melts and breaks the circuit. This state prevents hazardous potential differences from occurring, which could be caused by a disturbed electric line, a malfunctioning appliance, or lightning.The 250NHG3B-690 fuse is certified for a wide range of applications, including residential, commercial, and industrial locations. Its features, such as its quick-acting fuse element, enable it to be used safely in high power applications. It is also suitable for all types of circuits including those with high inrush current or high ambient temperatures. In conclusion, 250NHG3B-690 fuses are designed for overcurrent protection in a variety of electric circuits. The fuse element is made of a weak metal alloy which reacts quickly to an overcurrent by melting and quickly breaking the circuit. It is available in two different versions: standard and time-delay; and it is certified for a wide range of application areas including residential, commercial, and industrial circuits.

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