Littelfuse
Serving Wisconsin, Midwest United States
Authorized Partner Distributor for Littelfuse, serving Wisconsin, Midwest United States
About Littelfuse
Littelfuse is a globally recognized leader in circuit protection, power control, and sensing solutions, known for its innovation and durability across industrial and manufacturing environments. Founded in 1927, Littelfuse has built a reputation for high-performance products that protect equipment, ensure process reliability, and support advanced automation.
A key element of Littelfuse’s continued success is its strategic expansion through acquisitions. In 2024, the company acquired a 200mm wafer fabrication facility in Dortmund, Germany, from Elmos Semiconductor SE—strengthening its capabilities in power semiconductors used in energy storage, motor drives, renewables, and industrial automation. The 2023 acquisition of Western Automation Research and Development brought advanced shock protection and ground-fault technologies into Littelfuse’s portfolio, enhancing offerings for EV infrastructure and electrical safety in commercial and industrial settings.
Littelfuse provides a deep catalog of products built to serve OEMs, panel builders, facility managers, and electrical contractors operating in high-demand environments. From time-tested fuse technologies to advanced solid-state relays and motor protection relays, their solutions are used in HVAC systems, water and wastewater treatment facilities, material handling, oil and gas, automotive assembly, and large-scale manufacturing plants. Littelfuse’s ground fault protection devices and surge suppressors improve safety and compliance, while their current, voltage, and temperature sensors enable predictive maintenance and smart system diagnostics. Whether you’re building new machinery, retrofitting industrial controls, or protecting mission-critical equipment, Littelfuse’s rugged and scalable solutions are a top choice.
Additionally, Littelfuse is deeply invested in sustainability and next-generation manufacturing. Their expanded facility in Piedras Negras, Mexico, doubles their production capacity while incorporating automation and eco-conscious processes. This ongoing commitment to innovation ensures that Littelfuse products deliver long service life, efficient operation, and compliance with evolving industry standards.
For customers navigating power safety, automation, or system control challenges, the engineering team at Gross Automation is ready to assist in selecting and supporting the right Littelfuse solutions.
Frequently Asked Questions about Littelfuse
What certifications and standards do Littelfuse products comply with?
Littelfuse products are certified to multiple international standards, including UL (Underwriters Laboratories), CSA (Canadian Standards Association), CCC (China Compulsory Certification), and EAC (Eurasian Conformity). Customers can verify specific product certifications by consulting individual product datasheets on Littelfuse.com, which provide comprehensive details about standards compliance for each component.
What industries and applications are Littelfuse products used for?
Littelfuse products are critical for electrical protection and safety across multiple industrial sectors, including manufacturing, automation, power distribution, and electrical control systems. Their comprehensive product portfolio serves industries that require robust electrical protection, including motor and pump applications, solar installations, programmable logic controllers (PLCs), electrical switch panels, and critical infrastructure environments. Key product lines protect against overcurrent, voltage transients, ground faults, and temperature-related electrical risks, ensuring equipment safety and operational reliability.
What technical support does Littelfuse offer?
Littelfuse offers comprehensive technical support through multiple channels. Their Technical Hotline (800-TEC-FUSE) provides direct access to engineers who can help identify issues and recommend solutions. Additionally, Littelfuse offers extensive online Technical Resources at Littelfuse.com, including datasheets, product manuals, whitepapers, application guides, and online design tools. Their experienced product and application engineers also provide step-by-step support from design to installation.
What are the main product lines offered by Littelfuse?
Littelfuse offers comprehensive industrial protection and control product lines, including fuses, fuse holders, protection relays, temperature sensors, and electrical safety components. Their key product categories span surge protective devices, custom OEM products, electrical switch panels, medium voltage fuses, ground-fault protection relays, motor and pump protection devices, and temperature sensors. These products are designed to minimize electrical safety hazards, limit equipment damage, improve productivity, and safeguard personnel from electrical faults.
What are the key features of Littelfuse products?
Littelfuse products feature exceptional circuit protection technologies with key characteristics including UL/IEC safety standard compliance, low internal resistance, and advanced protective capabilities across multiple product lines. Their components provide critical protection for industrial systems, offering features like overcurrent protection, voltage transient suppression, and resettable protection devices with ultra-low resistance and compact designs. Key product lines include fuses, metal oxide varistors (MOVs), TVS diodes, PolySwitch devices, and specialized electronic protection components that enhance system reliability and safety.
What environmental ratings do Littelfuse products have?
Littelfuse products feature comprehensive environmental ratings, including NEMA Type 1, 2, 3, 3R, 4/4X, 12, and 13 certifications, as well as IP65 protection. These ratings ensure superior protection in diverse industrial environments, with an operating temperature range of -40°F to +131°F (-40°C to +55°C). Many products also include UV-stabilized materials and neoprene gaskets for enhanced durability in outdoor and challenging conditions.
What accessories are available for Littelfuse products?
Littelfuse offers several key accessories across their product lines, including fuse holders, voltage monitoring modules, and terminal connectors. Specific accessories include the LPSM003ZXID (indicating) and LPSM003Z (non-indicating) POWR-SAFE Dead Front fuse holders for Class CC and Midget-Style fuses, the VRM6048 voltage monitor accessory module, and female quick connect terminals (P1015 series) in various wire gauge sizes. These accessories are designed to enhance protection, monitoring, and connectivity for Littelfuse electrical components.
What is Littelfuse's warranty policy?
Littelfuse provides comprehensive warranty details on their official website at www.littelfuse.com/warranty. Customers should visit this page to review the specific warranty terms and conditions for their specific product lines. For direct warranty support or questions, customers can contact Littelfuse Technical Support at 1-800-TEC-FUSE or email [email protected].
What communication protocols do Littelfuse products support?
Littelfuse supports a comprehensive range of industrial communication protocols, including PROFIBUS, PROFINET, EtherNet/IP, DeviceNet, Modbus RTU, and CANopen. Our products provide flexible connectivity solutions across multiple industrial automation platforms, enabling seamless integration with various control systems and network architectures.
How are Littelfuse products typically installed?
Littelfuse products are typically installed using specialized mounting hardware like fuse holders, blocks, and panels designed for specific industrial applications. The POWR-SAFE Dead Front holders, for example, provide optimum protection for Class CC and Midget-Style fuses, supporting installations up to 600 VAC/DC. Installation often involves using precision terminals with strain relief, such as 0.25 in. female quick connect terminals, to ensure secure and safe electrical connections in industrial control systems.