Bel Fuse–Circuit Protection provides a comprehensive portfolio of fuse solutions, including PCB-mount, surface-mount, and PTC resettable devices. Its PCB-mount lineup features radial, standard glass, and ceramic cartridge fuses. The company has been a leader in advancing surface-mount fuse technologies—such as brick and chip designs—engineered to meet the growing demand for compact, space-saving electronics. In addition, it offers a full range of PTC resettable fuses in both surface-mount and radial configurations. Many of its products are certified to diverse performance standards by third-party agencies including UL, CSA, PSE, CCC, VDE, and Semko. All fuse and PTC resettable products are compliant with RoHS 2 requirements.

Bel Fuse Inc. develops, manufactures, and markets electronic components that power, protect, and connect circuits. Its operations are organized into three segments: Power Solutions and Protection, Connectivity Solutions, and Magnetic Solutions. The company’s products serve a wide range of industries, including networking, telecommunications, computing, industrial, high-speed data transmission, defense, commercial aerospace, transportation, and e-mobility. Its power portfolio includes front-end power supplies, board-mounted and industrial power products, transportation and defense-grade solutions, external power supplies, and circuit protection devices. Connectivity offerings include fiber optic connectors, cable assemblies, active optical components, copper-based interconnects, RF and microwave products, and Ethernet and industrial connectivity solutions. Its magnetic solutions segment delivers integrated connector modules, transformers, inductors, and Ethernet discrete components.