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Fuse

Fuse

In electronics and electrical engineering, a fuse is a type of low resistance resistor that acts as a sacrificial device to provide overcurrent protection, of either the load or source circuit. Its essential component is a metal wire or strip that melts when too much current flows through it, interrupting the circuit that it connects. Short circuits, overloading, mismatched loads, or device failure are the prime reasons for excessive current. Fuses are an alternative to circuit breakers.

A fuse interrupts excessive current ("blows") so that further damage by overheating or fire is prevented. Wiring regulations often define a maximum fuse current rating for particular circuits. Overcurrent protection devices are essential in electrical systems to limit threats to human life and property damage. The time and current operating characteristics of fuses are chosen to provide adequate protection without needless interruption. Slow blow fuses are designed to allow harmless short term currents over their rating while still interrupting a sustained overload. Fuses are manufactured in a wide range of current and voltage ratings to protect wiring systems and electrical equipment. Self-resetting fuses automatically restore the circuit after the overload has cleared, and are useful in environments where a human replacing a blown fuse would be difficult or impossible, for example in aerospace or nuclear applications.

Schneider LGL36400M37X motor circuit protector

Schneider LGL36400M37X motor circuit protector


Features and benefits• Low amp, current-limiting E-Rated PT medium voltage fuses are general purpose fuses defined by their melting time-current characteristic that permit their electrical interchangeability with other fuses of the same E Rating.• E-Rated general purpose fuses must have a
Schneider LGL36250U33X molded case circuit breaker

Schneider LGL36250U33X molded case circuit breaker


Features and benefits• Low amp, current-limiting E-Rated PT medium voltage fuses are general purpose fuses defined by their melting time-current characteristic that permit their electrical interchangeability with other fuses of the same E Rating.• E-Rated general purpose fuses must have a
Schneider LGL36250U31X molded case circuit breaker

Schneider LGL36250U31X molded case circuit breaker


FEATURES Physical size varies with electrical rating of fuse to prevent over-fusing Space saving sizeFor High Voltage Circuits • Non-Time Delay fuses for high voltage instruments and circuits. • Physical size varies with electical rating of fuse to prevent over-fusing. • Use HVA, HVB,
Schneider LGL36000S60X automatic molded case switch

Schneider LGL36000S60X automatic molded case switch


FEATURES Physical size varies with electrical rating of fuse to prevent over-fusing Space saving sizeFor High Voltage Circuits • Non-Time Delay fuses for high voltage instruments and circuits. • Physical size varies with electical rating of fuse to prevent over-fusing. • Use HVA, HVB,
Schneider LGL36000S40X automatic molded case switch

Schneider LGL36000S40X automatic molded case switch


FEATURES Physical size varies with electrical rating of fuse to prevent over-fusing Space saving sizeFor High Voltage Circuits • Non-Time Delay fuses for high voltage instruments and circuits. • Physical size varies with electical rating of fuse to prevent over-fusing. • Use HVA, HVB,
Schneider LGL34600WU54X mission critical circuit breaker

Schneider LGL34600WU54X mission critical circuit breaker


FEATURES Physical size varies with electrical rating of fuse to prevent over-fusing Space saving sizeFor High Voltage Circuits • Non-Time Delay fuses for high voltage instruments and circuits. • Physical size varies with electical rating of fuse to prevent over-fusing. • Use HVA, HVB,
Schneider LGL34600WU53X mission critical circuit breaker

Schneider LGL34600WU53X mission critical circuit breaker


FEATURES Physical size varies with electrical rating of fuse to prevent over-fusing Space saving sizeFor High Voltage Circuits • Non-Time Delay fuses for high voltage instruments and circuits. • Physical size varies with electical rating of fuse to prevent over-fusing. • Use HVA, HVB,
Schneider LGL34600WU44X mission critical circuit breaker

Schneider LGL34600WU44X mission critical circuit breaker


FEATURES Physical size varies with electrical rating of fuse to prevent over-fusing Space saving sizeFor High Voltage Circuits • Non-Time Delay fuses for high voltage instruments and circuits. • Physical size varies with electical rating of fuse to prevent over-fusing. • Use HVA, HVB,
Schneider LGL34600WU43X mission critical circuit breaker

Schneider LGL34600WU43X mission critical circuit breaker


FEATURES Physical size varies with electrical rating of fuse to prevent over-fusing Space saving sizeFor High Voltage Circuits • Non-Time Delay fuses for high voltage instruments and circuits. • Physical size varies with electical rating of fuse to prevent over-fusing. • Use HVA, HVB,
Schneider LGL34600WU33X mission critical circuit breaker

Schneider LGL34600WU33X mission critical circuit breaker


FEATURES Physical size varies with electrical rating of fuse to prevent over-fusing Space saving sizeFor High Voltage Circuits • Non-Time Delay fuses for high voltage instruments and circuits. • Physical size varies with electical rating of fuse to prevent over-fusing. • Use HVA, HVB,
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