2040.0819

Response Time:	Slow
Size / Dimension:	0.335" Dia x 0.335" H (8.50mm x 8.50mm)
Color:	--
Operating Temperature:	-40°C ~ 85°C
Approvals:	CCC, cURus, VDE
Melting I²t:	55
Breaking Capacity @ Rated Voltage:	35A
Mounting Type:	Through Hole
Package / Case:	Radial, Can, Vertical
Series:	MSU 250
Voltage Rating - AC:	250V
Current Rating:	2.5A
Fuse Type:	Board Mount (Cartridge Style Excluded)
Moisture Sensitivity Level (MSL):	--
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Fuses are devices designed to protect electrical systems by safely interrupting electric current when a pre-specified level of current, temperature, or pressure is exceeded. The purpose of fuses is to protect against excessive currents, typically resulting from overloading, short circuits, or electrical faults. Fuses are most commonly used in commercial and industrial applications, such as in appliances, computers, and other electronic systems.2040.0819 application field and working principleFuses are typically classified by application field and working principle. In terms of application field, fuses can be broadly categorized into residential fuses and commercial fuses, depending on their intended application and use. Residential fuses are used to protect home appliances and electronic systems, while commercial fuses are used to protect commercial equipment and machinery. In terms of working principle, fuses can be further classified into thermal fuses, current-limiting fuses, time-delay fuses, and electron-tube fuses, depending on the type of fuse used. Thermal fuses are used to protect against overheating due to an excessive current in the system. They are designed to initiate the interruption of a circuit when a pre-specified temperature has been exceeded. Generally speaking, thermal fuses feature a closed circuit with a thermocouple that is triggered when the temperature exceeds a pre-specified limit. Current-limiting or high-temperature fuses are designed to interrupt an overload or fault current in a circuit. Unlike thermal fuses, which initiate the interruption of a circuit when a pre-specified temperature has been exceeded, current-limiting fuses initiate their interrupting action when a pre-specified current level has been exceeded.Time-delay fuses are designed to protect electrical systems against short circuits. They are designed to initiate the interruption of a circuit when a pre-specified level of current has been exceeded for an extended period of time. Generally speaking, they are designed to allow a circuit to remain in operation until the current reaches a pre-specified level, and then to initiate the interruption of the circuit if the current remains at that level for an extended period of time. Electron-tube fuses are similar to current-limiting fuses in that they are designed to initiate their interruption action when a pre-specified level of current is exceeded. They differ in that they are designed to allow a much higher current surge before initiating the interruption of a circuit. This allows them to protect against large current surges that would cause damage to equipment. Overall, the wide variety of fuse designs available offer a broad range of protection against overloads, short circuits, and electrical faults, allowing for the safe operation of electrical systems and equipment. Fuses provide a critical function, and are an important protection against damage in residential and commercial applications.

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