---
product_id: 485527826
title: "3pcs 12V Fuse Relay Switch 12 AWG Harness Set with Built-in Diode- 30A ATO/ATC Blade Fuse, 4-Pin SPST Automotive Electrical Relays"
brand: "gebildet"
price: "$44.80"
currency: USD
in_stock: true
reviews_count: 13
category: "Gebildet"
url: https://www.desertcart.ec/products/485527826-3pcs-12v-fuse-relay-switch-12-awg-harness-set-built
store_origin: EC
region: Ecuador
---

# 30A High Switching Capacity Heavy Duty 12 AWG Wiring Built-in 30A Blade Fuse 3pcs 12V Fuse Relay Switch 12 AWG Harness Set with Built-in Diode- 30A ATO/ATC Blade Fuse, 4-Pin SPST Automotive Electrical Relays

**Brand:** gebildet
**Price:** $44.80
**Availability:** ✅ In Stock

## Summary

> ⚡ Power Up Smart: Fuse, Protect, and Switch Like a Pro!

## Quick Answers

- **What is this?** 3pcs 12V Fuse Relay Switch 12 AWG Harness Set with Built-in Diode- 30A ATO/ATC Blade Fuse, 4-Pin SPST Automotive Electrical Relays by gebildet
- **How much does it cost?** $44.80 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/485527826-3pcs-12v-fuse-relay-switch-12-awg-harness-set-built)

## Best For

- gebildet enthusiasts

## Why This Product

- Trusted gebildet brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Rugged Reliability:** Heavy-duty 12 AWG wires and metal mounting bracket ensure durability in any terrain.
- • **Plug & Play Precision:** Color-coded wires simplify installation—no guesswork, just seamless integration.
- • **Built-in Safety Shield:** Integrated diode and fuse protect your rig from voltage spikes and overloads effortlessly.
- • **Space-Saving Powerhouse:** Fuse socket built right in—ditch bulky fuse holders and reclaim your engine bay.
- • **Versatile Automotive Essential:** Perfect for lights, fans, starters, and more—upgrade your vehicle’s electrical game.

## Overview

This 3-piece 12V automotive relay harness set features Bosch-style 4-pin SPST relays with built-in 30A blade fuses and diodes for voltage spike protection. Equipped with heavy-duty 12 AWG wires and a metal mounting bracket, it offers easy, color-coded wiring and robust 30A switching capacity—ideal for upgrading car lights, starters, fans, and other 12V electrical accessories with space-saving efficiency and enhanced safety.

## Description

Product Features: Built-in fuse socket with 30A blade fuse. Bosch style 4-Pin SPST (Single Pole Single Throw) Relay. 30A High Switching Capability. Wire Specifications: Black - Ground (85), Red - VDC (30), White - Trigger (86), Blue - Output N/O (87). The built-in fuse holder on the automotive relay eliminates the need of a separate fuse holder in-line of the circuit, saving both space and money. In addition to the build-in fuse, the purchase of this relay includes the relay harness, which features an interlocking function for ease of grouping multiple relays together. Metal mounting tab on the electrical relay promotes easy installation. Interchangeable/Compatible with: All automobiles and devices equipped with a 12 Volt DC power source.

Review: Works great, Quality product - Work great, easy to install and use if you know how to wire, I've been using one to power my CB radio in my truck for over a year and it's held up well to mud and off road driving, easy to swap fuses if needed
Review: Great Quality - Good quality..works like a charm. Installed in my DeLorean...in the AC compressor circuit which does not have a relay, so all the switches need to absorb the electrical load with compressor is being activated...installing the circuit breaker took the load off the now 40 plus year old switches.

## Features

- Easy Wiring - The relay sockets come with color-labeled wires for loads/accessories convenient wiring. Black - Ground (85), Red - VDC (30), White - Trigger (86), Blue - Output N/O (87).
- Integrated Diode: Each relay includes a built-in diode that suppresses induced voltage during switching, safeguarding your electrical components from potential damage.
- Upgraded Version - Automotive relays built in fuse socket with included 30A blade fuse, no need of a separate fuse holder, saving space and money. Heavy duty 12AWG wires for main contact.
- Good Construction - 12V DC (Max14V DC) and 30A High Switching Capability. Bosch style 4-Pin SPST (Single Pole Single Throw) Relay. Metal mounting bracket on the electrical relay promotes easy installation.
- Wide Application - Wide range of use, greatly used for car lights, fog lamps, wiper, starter, fans, speakers, traction control systems, etc.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07TV9M1QR |
| Best Sellers Rank | #16,315 in Automotive ( See Top 100 in Automotive ) #7 in Automotive Replacement Starter Relays |
| Brand | Gebildet |
| Coil Voltage | 12 Volts |
| Connector Type | Wired |
| Contact Current Rating | 30 Amps |
| Contact Material | Brass |
| Contact Type | Normally Open |
| Current Rating | 30 Amps |
| Date First Available | August 30, 2021 |
| Item Weight | 6.3 ounces |
| Manufacturer | Gebildet |
| Maximum Switching Current | 30 Amps |
| Mounting Type | Mount |
| Operation Mode | Electrical |
| Package Dimensions | 8.23 x 4.21 x 1.26 inches |
| Wattage | 360 watts |

## Product Details

- **Connector Type:** Wired
- **Contact Material:** Brass
- **Contact Type:** Normally Open
- **Current Rating:** 30 Amps
- **Mounting Type:** Mount

## Images

![3pcs 12V Fuse Relay Switch 12 AWG Harness Set with Built-in Diode- 30A ATO/ATC Blade Fuse, 4-Pin SPST Automotive Electrical Relays - Image 1](https://m.media-amazon.com/images/I/418eOilQCnL.jpg)
![3pcs 12V Fuse Relay Switch 12 AWG Harness Set with Built-in Diode- 30A ATO/ATC Blade Fuse, 4-Pin SPST Automotive Electrical Relays - Image 2](https://m.media-amazon.com/images/I/41KcHyOfWUL.jpg)
![3pcs 12V Fuse Relay Switch 12 AWG Harness Set with Built-in Diode- 30A ATO/ATC Blade Fuse, 4-Pin SPST Automotive Electrical Relays - Image 3](https://m.media-amazon.com/images/I/41i3XtMFrSL.jpg)
![3pcs 12V Fuse Relay Switch 12 AWG Harness Set with Built-in Diode- 30A ATO/ATC Blade Fuse, 4-Pin SPST Automotive Electrical Relays - Image 4](https://m.media-amazon.com/images/I/51oFkadxZ2L.jpg)
![3pcs 12V Fuse Relay Switch 12 AWG Harness Set with Built-in Diode- 30A ATO/ATC Blade Fuse, 4-Pin SPST Automotive Electrical Relays - Image 5](https://m.media-amazon.com/images/I/51vInxjymcL.jpg)

## Available Options

This product comes in different **Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works great, Quality product
*by D***K on January 30, 2026*

Work great, easy to install and use if you know how to wire, I've been using one to power my CB radio in my truck for over a year and it's held up well to mud and off road driving, easy to swap fuses if needed

### ⭐⭐⭐⭐⭐ Great Quality
*by B***N on June 20, 2025*

Good quality..works like a charm. Installed in my DeLorean...in the AC compressor circuit which does not have a relay, so all the switches need to absorb the electrical load with compressor is being activated...installing the circuit breaker took the load off the now 40 plus year old switches.

### ⭐⭐⭐⭐⭐ Good price for 3 normally open relays
*by F***N on October 26, 2025*

Works great

## Frequently Bought Together

- Gebildet 12V Fuse Relay Switch Harness Set - 30A ATO/ATC Blade Fuse, 4-Pin SPST Automotive Electrical Relays with Heavy Duty 12 AWG Wires (Pack of 3)
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---

*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-02-09*