DaierTek Waterproof 12V Fuse Relay Box — Pre-Wired Harness, 12 Fuses & 4 Relays

Overview

The DaierTek Waterproof 12V Fuse Relay Box is a rugged, splash-resistant power distribution hub designed for 12V systems in boats, cars, trucks, and other vehicles. It combines fused protection with four relays in a compact, pre-wired package that helps keep wiring neat, organized, and reliable.

Built for tough environments

Engineered to withstand moisture, salt spray, and vibration, the unit features a top cover and a bottom cover that minimize exposure to water and dust. This protective design contributes to a closed, rugged housing that supports longer system life in demanding settings while still allowing easy access for maintenance.

Key benefits at a glance

• Pre-wired harness simplifies installation with color-coded conductors for quick identification.
• Includes 12 ATC/ATO fuses (2×10A, 2×15A, 2×20A, 2×25A, 4×30A) to cover multiple circuits with varying loads.
• Four 4-pin relays come ready to use, enabling straightforward switching of accessories and devices.
• Designed for 12V systems in marine, automotive, and other vehicle environments.
• 12 AWG high-current wiring on the power side supports safer handling of higher currents.

What’s included and how it helps

• 12 ATC/ATO fuses across a range of amperages for flexible circuit protection.
• 4 relays pre-installed to power auxiliary equipment with minimal wiring effort.
• Color-coded wiring and a compact form factor keep dashboards and engine bays tidy.

Practical applications

Ideal for organizing power rails in 12V systems on boats, trucks, and cars. Use it to power navigation lights, pumps, radios, lighting, or other accessories while maintaining tidy, protected circuits.

Specifications at a glance

The unit features 12 fuse slots, splash-resistant top and bottom covers, and a rugged enclosure that helps shield components from environmental factors. It ships pre-wired for straightforward installation and safe operation in harsh environments.

Note: The described benefits highlight what the product can offer in typical use cases. Real-world results depend on installation quality and system design. The goal is to provide a safer, neater, and more reliable power distribution option for 12V vehicles and environments.