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About Littelfuse

THE GLOBAL LEADER IN CIRCUIT PROTECTION

As the world leader in circuit protection, we offer the industry's most extensive product portfolio and the staff of technology experts who are dedicated to helping you find the right answer to your design or safety challenge.

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NEW! Solar Products

1000 Vdc 10x38 Fuses Specifically Designed to
Protect Photovoltaic
Systems

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TVS Diodes

Protect against damaging high-voltage transients

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Protection Relays

A full line of Ground Fault, Motor Protection and Feeder Protection Relays to
safeguard equipment
from electrical faults.

Learn More