Low-Voltage DC Vehicle Accessory Circuits
Automotive Relays & Fuse Boxes
DAIER offers automotive relays, fuse and relay box kits, and pre-wired assemblies for low-voltage DC accessory circuits. The range mainly covers 12V products, with other voltage options available on specific models. Browse the models below or send your part number and quantity for a quotation.
- Product range Relays & fuse boxes
- Assembly options Enclosures, kits & pre-wired
- Relay connections 4-pin & 5-pin models
- System voltage Mainly 12V DC; model-specific
Relay & Fuse Box Models
RB-R16F24-RF Automotive 24 Way Fuse and Relay Box Kit with 16 Relays and 24 Fuses
This automotive 24-way fuse and relay box kit offers a centralized solution for managing and protecting complex electrical systems.
RB-R10F10-W1 Automotive Pre-Wired 10 Way Fuse Relay Box with ATC/ATO Fuses and Relays
The 10 way fuse relay box is a 10-slot relay and 10-slot fuse design that includes 10×Bosch-style relays, and 10×ATC/ATO fuses.
RB-R10F15 12V 15 Way Fuse and Relay Box Enclosure Customizable Power Distribution Module
This 15 way fuse and relay box provides a configurable foundation for building custom 12V power distribution systems.
RB-R8F12-W2 Automotive Pre-Wired Relay Box with 8 Relays and 12 Fuses for 12V Systems
A fully pre-wired relay box 8-relay and 12-fuse power distribution module designed to drastically reduce installation time on complex electrical systems.
RB-R6F11-W1 11Way Pre-wired Relays and Fuses Relay Block Box
The 11-way relays and fuses relay block box includes 6×4-pin or 5-pin relays, 11×blade fuses, 30×relay terminals, 22×fuse terminals with pre-wired.
RB-R6F11 11 Way Fuse Relay Box Kit 6 Relay, 11 ATC/ATO Fuse slots with Terminals
This 11 way fuse relay box kit provides a configurable foundation for building custom 12V power distribution systems.
RB-R6F6S-W1 12V Waterproof 6 Way Automotive Fuse And Relay Box
The automotive fuse and relay box includes 6-way relay housing, relay terminal, insurance insert terminal, mounting bracket and waterproof adhesive pad, with neutral 4-pin relay and insert fuse with wire.
RB-R6F6-3 12V Automotive 6 Way Fuse and Relay Module Box with LED Indicators
This 12V 6 way fuse and relay module box offers a comprehensive wiring solution with pre-installed relays, fuses, a relay module, and LED indicators.
RB-R6F6-W2 Universal Pre-wired 6 Slots 12 Volt Auto Fuses and Relays Box
The auto fuses and relays box is a 6-slot relay and 6-slot fuse design that includes 6×Bosch-style 4-pin relays, 6×ATC/ATO fuses, and pre-wired.
RB-R6F6-W1-B Pre-wired Automotive Wireless Relay Box 6-Circuit Control Module
This pre-wired automotive wireless relay box combines centralized circuit protection with integrated wireless remote control for up to six independent circuits.
RB-R6F6-W1 Automotive Pre-Wired 6 Way 12V Fuse and Relay Box Power Distribution Module
This pre-wired 12V fuse and relay box, housed in a splash-resistant enclosure, provides a centralized power distribution and circuit protection solution for up to six independent circuits.
RB-R6F6-2-RF 6 Way 12V Relay Box Kit with 5-Pin Relays and ATC/ATO Fuses
This comprehensive 12V fuse and relay box kit provides a centralized and protected power distribution solution, including all necessary components for a custom build.
RB-R6F6-RF 6 Way Waterproof Fuse and Relay Box with ATC/ATO Fuses and Relays
The waterproof fuse and relay box include 5×40A 5Pin relay, 1×RTT7121 relay, 16×ATC/ATO fuses, 29×relay terminals, and 12×fuse terminals.
RB-R6F6 Automotive 6 Way Fuse and Relay Box with Terminals for Custom Fleet & Vehicle Wiring
This 6 way fuse and relay box provides a compact and configurable foundation for building custom 12V power distribution systems.
RB-R4F15-W1 12V Automotive 15 Way Fuse Relay Block with 4x Pre-Wired 40A 5-Pin Relays
A semi-pre-wired power distribution module with 4 pre-wired 40A relays and 15 customizable fuse slots, designed to accelerate professional installations.
RB-R4F12-W1 Pre-Wired 4-Relay 12-Fuse Box Power Distribution Module for 12V Systems
This power distribution module provides 12 independent outputs: 4 pre-wired relayed circuits for switched accessories and 8 fused-only circuits for constant power needs.
RB-R3F3S-W 3-Way Pre-wired 12V Relay Fuse Box | 40A 3-Slot Distribution Block
This 12V pre-wired relay fuse box features three 40A JD1912 relays and three assorted fuse slots (10A/20A/30A) housed in a sealed, waterproof enclosure.
RB-R4F12-W2-4P Pre-Wired Fuse and Relay Box 12-Slot ATO/ATC Fuse Block for Marine & Automotive
This pre-wired fuse and relay box provides a centralized power distribution and circuit protection solution for 12V systems.
FanController-1 Digital Engine Fan Controller Kit for 12V/24V Systems Thermostatic Switch (Replaces #0444)
This digital engine fan controller kit provides automated, temperature-based management for single or dual 12V/24V cooling fans.
RCR-1 Industrial RF Remote Control Switch 30A Relay for DC8-86V Motor & Equipment Control
This 30A wireless remote control switch provides reliable, long-range RF control for high-current DC electrical loads from 8V to 86V.
Product range
Relays, Box Kits & Pre-Wired Assemblies
This range brings together individual automotive relays, fuse and relay boxes, and wiring assemblies for low-voltage DC accessory circuits. The supply format varies by model, from a relay or enclosure kit to an assembly with relays, fuses and wiring.
Individual Relays & Socket Kits
Individual relays provide switching for a single circuit. Socket and wiring kits provide the connection components for installation. The range includes 4-pin and 5-pin models; check the terminal diagram, coil voltage and contact load rating for the exact part number.
Fuse & Relay Box Kits
Box kits group relay and fuse positions in one enclosure for organized accessory wiring. Some models include terminals only, while others also include relays and fuses. Check the included components, slot layout and mounting dimensions before ordering.
Pre-Wired Assemblies
Pre-wired versions include wiring for the stated configuration and reduce harness assembly work. Compare circuit functions, wire sizes, cable lengths and connectors against your project requirements. Included relays, fuses and other components vary by model.
Voltage & Order Requirements
Most products in this range are for 12V DC accessory circuits, while some controllers have other operating ranges. Coil voltage and contact load ratings are separate specifications. Check model-specific electrical ratings and enclosure protection rather than applying one rating to the whole range.
For a production enquiry, send the part number and required quantity. If you need a different wiring arrangement, include the DC system voltage, loads per circuit, circuit diagram, cable lengths and connectors so the sales team can review an existing model or an OEM configuration.
Applications
Typical Relay Applications
Relay assemblies support accessory switching and organized circuit wiring. Match each model to the electrical loads and installation conditions of the project.
Vehicle Accessories
Control lighting, fans and other auxiliary loads with individual relays or multi-circuit fuse relay boxes.
RV & Service Vehicles
Group accessory circuits in a compact assembly with a wiring layout that supports installation and maintenance.
OEM Harness Assemblies
Specify relay and fuse positions, cables and connectors for repeatable vehicle or equipment wiring.
Common questions
Relay FAQs
Answers about box configurations, wiring, ratings and quotation requirements.
For a project enquiry
Send a part number and quantity, or share your circuit layout and wiring requirements.
Send project detailsAn enclosure or terminal kit is intended for your own wiring assembly. A kit may also include relays and fuses. Pre-wired versions include an assembled harness; included components and wire specifications depend on the model.
No. Most products in this range are for 12V DC circuits, but some controllers have different operating ranges. Check each model. For individual relays, confirm both the coil voltage and the contact load rating. Fuse limits, wires and connectors also affect the complete assembly; one relay rating is not the total current rating of a box.
No. Protection depends on the enclosure, seals, connectors and installation. Use the stated specification for the exact model and tell us if the assembly will be exposed to water or dust.
Yes. Send a wiring diagram or describe the relay and fuse positions, cable lengths, connectors and required quantity. We can review whether an existing assembly or an OEM configuration fits your project.
A part number and quantity are a good starting point. For a new assembly, include the system voltage, loads per circuit, relay and fuse count, wiring requirements and installation conditions.
Request a Relay Quote
Send the part number and quantity for a quotation. For a new wiring assembly, include the DC system voltage, loads per circuit and wiring requirements. We can review a catalog model or discuss an OEM configuration.
Prefer email? sales1@chinadaier.com