Circuit Protection Technologies

Littelfuse offers an extensive circuit protection product line. They design forward-thinking, application-specific solutions to provide assurance that your most demanding requirements will be met. Their goal is to provide the most complete range of options so that you will not have to compromise.

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Circuit Breakers

Littelfuse's automotive circuit breakers fit into existing fuse blocks and fuse clips, and our aftermarket bladed circuit breakers feature scored terminals. This makes it easier to trim the blades if doing so is necessary to ensure secure installation.

Circuit Protection - Assortment Kits

Various sample kits available including, Varistor, LED Lighting Protection and Port Protection

Circuit Protection Accessories

Find the ideal solution for securing, testing, or removing any type of fuse in every kind of application

Circuit Protection Kits - Fuse

Find the right fuse solution for your next product design with our Fuse Kits

Circuit Protection Kits - TVS Diodes

Find the right TVS solution for your next product design with our TVS Diode Kits

Electrical, Specialty Fuses

Specialty automotive overcurrent protection devices from Littelfuse include shunts, diodes, and resistors.

Fuseholders

Fuseholders makes it easier to install fuses. Each fuse requires a holder designed for its size, shape, and performance demands.

Fuses

Littelfuse manufactures the broadest and most innovative selection of fuses to serve nearly every possible application

Gas Discharge Tub Arresters (GDT)

Reduce the risk of damage from short-lived and unpredictable voltage surges

Ground Fault Circuit Interrupter (GFCI)

Littelfuse Ground-Fault Circuit Interrupter (GFCI) products protect workers against electrical shock in industrial applications

Lighting Protection

Open LED protectors provide a switching electronic shunt path when a single LED in an LED array fails as an open circuit

PTC Resettable Fuses

Littelfuse devices employ polymer positive temperature coefficient technology to protect electronic components and integrated circuits from inrushes of current

Surge Suppression ICs

Safeguard components from transient overvoltage or surges by limiting the fault current to a load or the unit being protected

Thermal Cutoffs (Thermal Fuses)

Combining resettable fuses with bimetallic thermal cutoff devices to provide overcurrent and overtemperature protection to rechargeable batteries

Transient Voltage Suppressors (TVS)

Transient voltage suppressor (TVS) diodes defend against damage from overvoltage events by responding within picoseconds to shunt current to ground

Varistors, MOVs

Overvoltage protection devices shield semiconductors and other components from damage due to lightning strikes, and electrostatic discharges