Bel Fuse authorized distributor — fuses, Ethernet magnetics, MagJack connectors & power modules.
Bel Fuse Inc. is a NASDAQ-listed US manufacturer of electronic components founded in 1949. Under the “Power, Protect & Connect” tagline, Bel Fuse delivers a broad portfolio spanning circuit protection, signal magnetics and power conversion. Belden supplies Bel Fuse worldwide from Singapore.
Bel Fuse Inc.
Bel Fuse Inc. was founded in 1949 in Jersey City, New Jersey, USA. Listed on NASDAQ under the ticker symbols BELFA and BELFB, Bel Fuse has grown from a specialist fuse manufacturer into a diversified electronic components company serving industrial, networking, automotive, medical and consumer markets worldwide.
The company’s product portfolio is built around three complementary pillars: circuit protection (fuses, resettable PTCs), connectivity (Ethernet magnetics, MagJack integrated RJ45 connectors, signal transformers) and power conversion (DC-DC converters and AC-DC power modules). This “Power, Protect & Connect” breadth makes Bel Fuse a single-source supplier for many board-level design requirements.
Belden Electronic Components is an authorized franchise distributor of Bel Fuse in Singapore. We supply principal-direct stock with full lot and date-code traceability, shipping to manufacturers anywhere in the world.
The Bel Fuse product portfolio.
From cartridge fuses and resettable PTCs to MagJack connectors and AC-DC power modules — we stock and source across the full Bel Fuse range.
Fuses — cartridge, SMD & automotive
Fast-acting and time-delay fuses across a wide current and voltage range.
- Cartridge (5×20 mm, 6.3×32 mm)
- Surface-mount chip fuses (0402–2920)
- Automotive blade & glass tube
Resettable PTCs
Polymeric PTC devices that reset automatically after fault clearance.
- Leaded and SMD footprints
- Telecom and USB protection
- Nano, micro and standard sizes
Ethernet magnetics & transformers
Discrete LAN transformers and common-mode chokes for PHY isolation.
- 10/100/1000BASE-T compatible
- Multi-gig & PoE support
- SMD and through-hole packages
MagJack integrated connectors
RJ45 connectors with integrated magnetics, LEDs and termination resistors.
- Single, dual, quad & octal port
- PoE / PoE+ ready variants
- Saves PCB area vs. discrete designs
DC-DC converters
Isolated and non-isolated DC-DC modules for board-level power.
- 1 W to 300 W+ modules
- Wide-input telecom & industrial
- Open-frame and encapsulated
AC-DC power modules
Compact off-line power supplies for embedded and industrial designs.
- Medical & ITE safety approvals
- Open-frame & enclosed formats
- Switching frequencies up to GaN
Where engineers specify Bel Fuse.
Bel Fuse components are designed into networking infrastructure, industrial equipment, automotive platforms, medical devices and consumer electronics worldwide.
Authorized distribution, not gray market.
Franchise-direct supply is the only way to guarantee genuine Bel Fuse stock with full lot traceability and manufacturer warranty.
Before you call sales.
What is Bel Fuse?
Bel Fuse Inc. is a US-based electronic components manufacturer founded in 1949 and headquartered in Jersey City, New Jersey. Listed on NASDAQ (BELFA / BELFB), Bel Fuse designs and manufactures circuit protection components (fuses, PTCs), Ethernet magnetics and transformers, MagJack integrated connectors, DC-DC converters and AC-DC power supplies under the tagline “Power, Protect & Connect”.
Are you an authorized Belfuse distributor?
Yes. Belden Electronic Components is an authorized franchise distributor of Bel Fuse Inc., supplying fuses, resettable PTCs, Ethernet magnetics, MagJack connectors, DC-DC converters and AC-DC power modules direct from the manufacturer with full traceability and manufacturer warranty.
What is a MagJack connector?
A MagJack connector is Bel Fuse’s branded integrated RJ45 connector with built-in Ethernet magnetics (transformer and common-mode choke). By integrating the magnetics and LEDs directly into the connector housing, MagJack connectors reduce PCB area, simplify design, improve signal isolation and speed up assembly. They are available in single-, dual-, quad- and octal-port configurations for 10/100/1000BASE-T and multi-gigabit Ethernet.
What fuse types does Belfuse offer?
Bel Fuse offers a broad range of fuse types including fast-acting and time-delay cartridge fuses, surface-mount chip fuses (0402 to 2920 case sizes), automotive blade and glass-tube fuses, high-voltage fuses and resettable PTC (polymeric positive temperature coefficient) fuses. Current ratings span from milliamps to hundreds of amps across voltage ratings from 32 V to 600 V and above.
Need a Bel Fuse part — fuse, MagJack or power module?
Send us the part number or series. Our sales team replies within one business day with pricing, stock and lead-time. Ships worldwide from Singapore.