12 Way 8-Relay Pre-Wired Fuse Box
Product Overview
The 12 Way 8-Relay Pre-Wired Fuse Box is a high-capacity automotive power distribution and circuit control solution designed for vehicles and equipment with multiple auxiliary electrical accessories.
It integrates 12 ATC/ATO blade fuse positions and 8 automotive relay positions into one enclosure, providing centralized fuse protection and relay control while helping keep complex wiring systems clean and organized.
The pre-wired harness reduces terminal crimping, relay socket assembly, and repetitive manual wiring, making installation more efficient for automotive modification, aftermarket electrical systems, special-purpose vehicles, and OEM wiring projects.
Eight circuits can be configured with relay-controlled switching, while the remaining fuse positions can be used for additional protected power circuits according to the customer's electrical design.
Relay specifications are available for 12V and 24V systems, with relay current ratings from approximately 30A to 60A, depending on relay model, wiring specification, load characteristics, and project requirements.
FUZTRAX can supply this product as a complete pre-wired assembly or provide housing, terminals, relays, fuses, and related components separately according to customer requirements.
Key Features
12 Fuse Positions + 8 Relay Positions
The integrated design combines twelve ATC/ATO blade fuse positions and eight automotive relay positions in one centralized enclosure.
The 12-fuse layout provides sufficient capacity for multiple auxiliary circuits, while the eight relay positions allow selected electrical accessories to be independently switched through relays.
This configuration is especially suitable for electrical systems that require a combination of relay-controlled circuits and fuse-protected direct power circuits.
Pre-Wired for Faster Installation
The pre-installed wiring harness helps reduce repetitive terminal crimping, relay socket wiring, and manual assembly.
Color-coded wiring can make circuit identification easier and help reduce installation errors.
For OEM and ODM projects, the wiring configuration can be customized according to the customer's vehicle, equipment, and control requirements.
Available customization may include:
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Wire gauge
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Wire length
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Wire color
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Terminal configuration
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Circuit layout
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Relay configuration
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Fuse configuration
8 Independent Relay-Controlled Circuits
Eight relay positions provide independent switching control for multiple electrical accessories.
Typical relay-controlled applications include:
Relay-controlled circuits can be configured according to the customer's actual electrical requirements.
Additional Fuse-Protected Circuits
Because the unit includes twelve fuse positions and eight relay positions, additional fuse positions can be used for protected circuits that do not require relay switching.
These circuits may be used for lower-current accessories, control equipment, auxiliary power outputs, or other DC loads according to the customer's wiring design.
This combination provides greater flexibility than a fuse relay box where every fuse position must be paired with a relay.
12V / 24V Relay Options
Relay configurations are available for common automotive and equipment electrical systems.
Available voltage options include:
Available relay current ratings may include:
Relay models and specifications can be selected according to customer requirements.
Final relay selection should be based on:
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System voltage
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Continuous operating current
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Starting or inrush current
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Wire gauge
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Fuse rating
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Terminal capacity
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Connector capacity
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Installation environment
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Electrical load characteristics
ATC / ATO Blade Fuse Compatible
The fuse block is compatible with commonly used ATC/ATO automotive blade fuses.
Different fuse ratings can be selected for individual circuits according to the actual current requirements of the connected equipment.
This makes fuse selection, replacement, inspection, and maintenance convenient for automotive aftermarket and custom electrical applications.
Centralized Power Distribution
Complex vehicle electrical systems can require numerous relays, fuse holders, terminals, and wiring connections.
The 12 Way 8-Relay Fuse Box centralizes major circuit protection and switching components into one enclosure, helping reduce scattered relays and inline fuse holders throughout the vehicle.
The result is a cleaner and more organized electrical installation.
Protective Top Cover
The fitted top cover helps protect the relays, fuses, and electrical terminals from dust, dirt, debris, and accidental contact.
This product is not waterproof.
It should be installed in a dry or protected location.
Do not expose the unit directly to rain, continuous water spray, high-pressure washing, or immersion.
Multiple Supply Options
FUZTRAX can supply this product in different configurations according to customer requirements.
Complete Pre-Wired Assembly
Includes housing, terminals, relays, fuses, and pre-installed wiring.
This option is suitable for customers who require a ready-to-install electrical assembly.
Unwired Fuse Relay Box
The product can also be supplied without pre-installed wiring.
This option is suitable for professional installers, wiring harness manufacturers, custom vehicle builders, and OEM customers who want to create their own electrical configuration.
Housing + Terminal Kit
Housing and terminals can be supplied separately for customers who prefer local assembly or their own wiring production.
Relay Supply
12V and 24V automotive relays can be supplied according to customer requirements.
Available current ratings may range from approximately 30A to 60A depending on the selected relay model.
Individual Components
Housing, terminals, relays, fuses, and related components can also be ordered separately according to the required configuration.
Applications
The 12 Way 8-Relay Pre-Wired Fuse Box is suitable for a wide range of automotive and auxiliary electrical applications, including:
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Off-road vehicles
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Pickup trucks
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SUVs
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RVs
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Custom vehicles
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Special-purpose vehicles
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Utility vehicles
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LED lighting systems
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Driving lights
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Fog lights
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Work lights
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Air horns
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Cooling fans
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Fuel pumps
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Auxiliary pumps
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Audio accessories
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Multiple auxiliary electrical accessories
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Automotive aftermarket wiring
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OEM wiring harness assemblies
Product Specifications
Product Name:
12 Way 8-Relay Pre-Wired Fuse Box
Fuse Positions:
12
Relay Positions:
8
Fuse Type:
ATC / ATO Blade Fuse
Wiring Type:
Pre-Wired or Unwired
Relay Voltage Options:
12V / 24V
Relay Current Options:
Approximately 30A–60A
Relay Model:
Customizable
Housing Protection:
Dust and debris protection
Waterproof:
No
Fuse Rating:
Customizable according to circuit requirements
Wire Gauge:
Customizable
Wire Length:
Customizable
Wire Color:
Customizable
Terminal Configuration:
Customizable
Connector Type:
Customizable
Wiring Configuration:
Customizable
Supply Options:
Complete pre-wired assembly / Unwired box / Housing + terminals / Relays / Fuses / Individual components
Why Choose the 12 Way 8-Relay Configuration?
The 12 Way 8-Relay configuration is designed for vehicles and equipment that require multiple protected circuits together with extensive relay-controlled switching.
The twelve fuse positions provide sufficient capacity for larger electrical systems, while eight relay positions can be assigned to higher-current or independently controlled accessories.
The additional fuse positions can be used for circuits that require fuse protection without relay switching, providing greater flexibility when designing a complete vehicle electrical system.
Compared with installing multiple standalone fuse holders and relays throughout the vehicle, the integrated enclosure helps simplify wiring management and creates a cleaner installation.
This configuration is particularly suitable for:
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Multi-accessory off-road builds
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Truck electrical upgrades
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SUV modifications
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RV electrical systems
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Special-purpose vehicles
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Custom vehicle projects
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OEM electrical assemblies
OEM & ODM Customization
FUZTRAX provides OEM and ODM manufacturing services for automotive fuse boxes, relay boxes, wiring harnesses, terminals, and related electrical assemblies.
Customization options include:
Customers can purchase a complete pre-wired product or order the housing, terminals, relays, fuses, and related components separately according to their own manufacturing and assembly requirements.
Important Electrical Notice
The current rating printed on a relay represents the relay contact specification and does not automatically represent the safe continuous current capacity of the complete fuse relay box or wiring harness.
Actual allowable circuit current depends on multiple factors, including:
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Wire cross-sectional area
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Fuse rating
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Relay contact rating
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Terminal capacity
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Connector capacity
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Continuous operating current
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Starting or inrush current
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Ambient temperature
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Installation method
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Electrical load characteristics
Always select the correct relay, fuse, wire gauge, terminals, and connectors according to the actual electrical requirements of the connected equipment.
For high-current, motor-driven, or specialized electrical applications, confirm the required operating current and complete electrical specification before ordering.
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