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Products

Littelfuse has industrial, vehicular, semiconductor, and electronic products to meet your design and application needs.

Capacitors, inductors, and resistors boost the performance of HVAC units, pumps, fans, and electric motors. Capacitors store an electrical charge and release the charge when needed. Inductors store excess current as a magnetic field, and resistors release overcurrent as heat to protect circuits.

Find capacitor, inductor, and resistor solutions for optimizing and protecting electronic equipment that starts quickly and receives unpredictable surges and drops in current.

Littelfuse offers proven, reliable overcurrent solutions. Our global reputation is built from years of engineering and design expertise. Our fuses and devices safeguard sensitive electronic systems. From automotive to industrial applications, our products meet global standards, protecting equipment worldwide.

Products

Heaters
Blow-by, diesel fuel, and diesel exhaust fluid (DEF) heaters from Littelfuse have long ensured vehicles and generators operate in low-temperature environments. Our DEF heater also boosts selective catalytic reduction (SRC) processes. Plus, Littelfuse’s polymeric positive temperature coefficient (PTC) resettable devices heat fluids and gases to improve car battery and digital camera performance.

Browse engine, fuel tank, and polymetric PTC heater solutions as well as our stick heater module for filter applications. You can customize that to meet many requirements.

Rely on our LED and incandescent panel lights and pilots lights to alert you when a piece of equipment starts, stops, or requires maintenance.

Browse our website for indicator devices that show when fuses require replacement, electrical systems have overheated, and that status of a machine or motor has changed.

Diodes, TVS, diode arrays, relays, surge protectors, SIDACtor® protection thyristors, and varistors provide overvoltage protection to PCBs, LED arrays, and other delicate electronics. The devices also help save power by switching current efficiently and limiting current leakage. Rely on Littelfuse products when designing, building, and servicing electrical systems.

Products

Panels
Find electrical panels produced by Littelfuse. Each breaker box or fusible switch panel is UL Listed and meets NEC coordination requirements. Whether you order standard models or work with us to customize panels for your unique construction project, avoid time, money, and code compliance headaches with Littelfuse panels.

Browse optimized pre-engineered and fully compliant panels. Read the specifications for LCP, LFCP, LPMP, and LPS panels, then consult a Littelfuse expert.

DC power distribution modules (PDMs) allow passenger and commercial vehicle makers to reduce the number and complexity of wiring harnesses while boosting circuit protection. Each PDM accepts a mix of fuses and relays for 12 V systems and higher. Littlefuse supplements our wide range of configurable, hardwired, fuse-only, and compact POWR-BLOK PDMs with fuse holders and junction box bolts.

Choose the power distribution modules and accessories that meet your needs. Can't find the right PDM module for your application? Contact a Littelfuse expert to discuss creating customized solutions.

A comprehensive portfolio of power semiconductor and integrated circuit technologies in industry standard and innovative packages. We design forward-thinking, application-specific solutions to provide assurance that your most demanding requirements will be met.
Relays, contactors, and transformers reliably control the flow and distribution of electrical current, ensuring a safer and optimal operation. You will find our products protecting people and equipment across a wide range of industries, including construction, food and beverage, eMobility, HVAC, mining, manufacturing, renewable energy, oil and gas extraction, and transportation.

Products

Sensors
Electronic devices, industrial processes, and commercial and passenger vehicles rely increasingly on sensors to monitor and control their operation. Littelfuse meets this growing demand for highly sensitive, finely tuned, and dependable devices with wide ranges of thermistors, RTD probes, reed sensors, and Hall effect sensors.
Operator-controlled, pressure, temperature, and mechanical switches must meet the highest standards for usability and reliability. Littelfuse switches are used in vehicle, industrial, HVAC, and electronic device applications. We also offer a full range of sockets, plugs, coils, and other connectors.