Littelfuse HWB Series Fuse Holders are designed for use in power distribution systems, offering waterproof protection for various components. These fuse holders accept a combination of MINI fuses, circuit breakers, and relays, allowing for custom circuit configurations. The HWB series feature terminal position assurance locks and a gasket-sealed cover to maintain IP67 ratings for dust and water resistance. The minimum operation temperature is -40°C, with a voltage rating of 58VDC. These devices are ideal for applications in work trucks, specialty equipment, emergency vehicles, and construction site support equipment.
Littelfuse HWB Series Fuse Holders
Features
- -40°C minimum operating temperature
- 58VDC maximum voltage rating
- Gasket-sealed for dust and moisture resistance
- IP67 ingress protection rating
- MINI fuses and circuit breakers supported
- TPA locks prevent wire disconnection
- UL 94 V-0 thermoplastic base and cover
Applications
- Accessory circuits
- Main unit on small vehicles
- Overflow circuits
- Upfitting vehicle electrical system
Resources
- Littelfuse HWB6 Series Power Distribution Fuse Holders Datasheet & Specifications (PDF)
- Littelfuse HWB12 Series Power Distribution Fuse Holders Datasheet & Specifications (PDF)
- Littelfuse HWB18 Series Power Distribution Fuse Holders Datasheet & Specifications (PDF)
- Littelfuse HWB60-AL Series Power Distribution Fuse Holders Datasheet & Specifications (PDF)
Video
This TTI Tech Specs video for Littelfuse’s hardwired power distribution modules (PDM) explains that the power distribution modules include the HWB series and HWA series modules that are equipped with best-in-class IP67 and IP69K water-proof and dust-tight sealings that also protect the sensitive internal components from corrosion and salt spray.
See video transcript below
Video Transcript
As you might imagine, heavy equipment and commercial vehicles tend to have really complicated power distribution systems. Between inline fuse holders, isolated relays, circuit breakers, and the primary power distribution system, technicians troubleshooting these electrical systems will usually let out a silent scream that only dogs and cats can hear.
Littelfuse’s hardwired Power Distribution Modules (PDM) for vehicles or commercial equipment consolidate the components needed for accessory and overflow circuits in one location. The PDMs include the HWB series and HWA series modules that are equipped with best-in-class IP67 and IP69K water-proof and dust-tight sealings that also protect the sensitive internal components from corrosion and salt spray.
A high temperature gore vent allows for heat and pressure to be expelled while maintaining IP ratings for an operating temperature up to 125°C. The HWB family is compatible with MINI fuses that offer a wide range of protection from 2A up to 30A, while the HWA modules are compatible with 40A rated ATO fuses, making the HWB and HWA family an excellent choice for custom or low volume circuit protection designs.