FWP-90B

Applications:	Electrical, Industrial
Melting I²t:	415
Size / Dimension:	0.947" Dia x 2.594" L (24.05mm x 65.89mm)
Package / Case:	Cylindrical, Blade Terminal (Bolt)
Mounting Type:	Bolt Mount
Breaking Capacity @ Rated Voltage:	200kA AC, 50kA DC
Operating Temperature:	--
Approvals:	CE, CSA, UR
Class:	--
Features:	--
Series:	FWP
Response Time:	--
Voltage Rating - DC:	500V
Voltage Rating - AC:	700V
Current Rating:	90A
Fuse Type:	Cartridge
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Electrical, Specialty Fuses: FWP-90B Application Field and Working Principle

Fuses are commonly used in electrical and electronic equipment to protect the equipment from short-circuit and overload faults. FWP-90B fuses are a type of specialty fuses specifically designed for use in certain applications. In this article, we will discuss the application field of FWP-90B fuses as well as their working principle.

Application Field of FWP-90B Fuses

FWP-90B fuses are designed for use in the protection of electrical motors, especially low-voltage and high-current DC motors. They are used to protect both the electrical motor and the equipment it powers, from various electrical faults. These fuses are usually installed between a power source and the motor, and are designed to trip when the fault current exceeds the operation current of the fuse. FWP-90B fuses can also be used in the protection of certain types of wind and solar power systems. These systems often require protection from high-current overloads, and FWP-90B fuses can be used to provide this protection. These fuses are especially beneficial in areas where lightning is a common occurrence, as they provide protection from lightning strikes as well.

Working Principle of FWP-90B Fuses

The working principle of FWP-90B fuses is based on a thermal-magnetic trip mechanism. The thermal component of this mechanism is the fuse element. This element is composed of a metal alloy that is designed to melt at a pre-determined temperature. When the ambient temperature around the fuse increases, the fuse element melts, causing a break in the circuit. This will trip the fuse and protect the equipment from further damage. The melting point of the fuse element is directly related to the amp rating of the fuse; the higher the amp rating, the higher the melting point of the fuse element. The magnetic component of the thermal-magnetic trip mechanism is the trip mechanism itself. This mechanism consists of a bimetal strip and an electrical coil. When the coil is energized, the bimetal strip bends, and when the strip bends to a certain point, it triggers the fuse trip mechanism. When the current through the fuse exceeds the amp rating of the fuse, the fuse element will experience a rapid increase in temperature. This will cause the bimetal strip to bend more quickly, triggering the trip mechanism and disconnecting the circuit.

Conclusion

FWP-90B fuses are a type of electrical specialty fuses specifically designed for use in the protection of certain types of DC motors, as well as in applications related to wind and solar power. These fuses are based on a thermal-magnetic trip mechanism which consists of a fuse element and a trip mechanism that works together to protect the equipment against high-current overloads.

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