12V 4-Relay Fuse Box with 15-Way Blade Fuse Holder

A pre-wired relay and fuse control box designed for organizing multiple accessory circuits in compatible 12V automotive and marine electrical systems. The 4 relay slots support controlled switching for higher-load accessories, while the 15-way fuse holder helps protect individual circuits with standard blade fuses. This setup is useful for electrical system upgrades, auxiliary lighting, fans, pumps, horns, compressors, and other vehicle accessories.

Control Box Layout
Relay capacity: 4 relay slots
Relay type: 4-pin 40A relays
Fuse capacity: 15 blade fuse positions
Voltage use: 12V DC systems
Fuse style: Standard automotive blade fuses
Wiring style: Pre-wired output leads for easier circuit connection

Included Setup
4 relay socket positions
15-way fuse block
4 compatible 40A relays
Assorted blade fuses
Pre-wired harness layout

Suitable For
Cars, trucks, boats, marine wiring, off-road vehicles, trailers, RVs, accessory panels, lighting systems, and general 12V electrical upgrades.

Installation Note
Match each fuse rating to the connected accessory circuit and verify relay load, wiring size, polarity, grounding, and total current requirements before installation.