ABOUT LITTELFUSE Since 1927, Littelfuse has provided products to address customer needs for protection, safe control and distribution of electrical power in industrial applications. The product portfolio includes protection relays, pump controllers, load sensors, timing controls, and custom designs to minimize electrical safety hazards, limit equipment damage, improve productivity, and safeguard personnel from injury due to electrical faults. Professionals in construction, manufacturing, mining, oil & gas, and others rely on Littelfuse technical expertise for high quality, long lasting products for their applications.