Littelfuse WPB1 Series In-Line Watertight Fuse Holder

Littelfuse WPB1 Series In-Line Watertight Fuse Holder

The Littelfuse WPB1 Series In-Line Watertight Fuse Holder is built to protect electrical circuits in environments where exposure to moisture is a real concern. As an in-line fuse holder, the WPB1 mounts directly into a circuit conductor run rather than requiring a separate panel or enclosure, giving electricians and technicians a compact, accessible point for fuse installation, inspection, and replacement. Its watertight housing design makes the WPB1 Series a practical choice for outdoor, wet-location, and other exposed electrical applications where a standard, unsealed fuse holder would be vulnerable to moisture ingress, corrosion, and eventual connection failure.

Key Features

• In-Line Configuration: The WPB1 mounts directly in-line with circuit conductors, simplifying installation into an existing wiring run without the need for a separate enclosure or panel cutout.
• Watertight Construction: A sealed housing design helps keep the fuse element and connection points protected from moisture intrusion, supporting reliable use in wet or outdoor locations.
• Fuse Holder Functionality: Provides a secure, accessible mounting point for a fuse, supporting overcurrent protection on the circuit it is installed in.
• Field-Serviceable Design: The compact in-line format keeps the fuse holder close to the circuit it protects, making routine inspection and fuse replacement easier during field maintenance.
• Simple, Panel-Free Installation: Because the WPB1 mounts in-line rather than in a box or panel, it can be added to a conductor run in locations where a full enclosure is impractical.
• Littelfuse Engineering: Backed by Littelfuse's long-standing focus on circuit protection components used across commercial, industrial, and OEM electrical systems.

Technical Specifications

• Refer to manufacturer documentation for complete technical specifications.

Typical Applications

• Outdoor and Wet-Location Electrical Installations
• In-Line Fuse Protection for Branch Circuits
• Commercial and Industrial Equipment Wiring
• Exterior Lighting and Landscape Circuit Protection
• Renovation and New Construction Projects Requiring Sealed, Field-Serviceable Connections

Why Littelfuse?

Littelfuse is a well-established manufacturer of circuit protection components, and the WPB1 Series reflects that focus with a watertight, in-line fuse holder built for dependable performance in exposed installation environments. For electrical professionals who need a sealed, field-serviceable way to add fuse protection to a circuit run, the WPB1 Series offers a straightforward solution that helps guard connections against moisture-related failures over time.