FuelTech Relay w/ Built-In Fuse 40A - 3020100310
Reliable Power Distribution for High-Performance Wiring
The FuelTech 40A Relay with Built-In Fuse is a high-quality, sealed relay designed for reliable power control in custom wiring and standalone ECU setups. Ideal for powering ECUs, fuel injectors, ignition coils, and other critical components, this relay ensures consistent electrical performance in demanding environments.
With an integrated fuse and sealed construction, it provides added protection and durability, making it a must-have for professional-grade harness builds.
Perfect for Custom Harness Builds
Whether you're building a complete standalone harness or upgrading your electrical system, this relay offers a simple and effective solution for controlling high-current circuits.
- Commonly used for ECUs, injectors, and ignition coils
- Ideal for custom wiring and motorsports applications
- One relay required per powered component
- Ensures proper load control and circuit protection
Integrated Fuse for Added Protection
The built-in fuse adds an extra layer of protection, helping safeguard your electrical system from overloads and potential damage.
- 40A capacity for high-current applications
- Integrated fuse for circuit protection
- Reduces need for additional inline fuse holders
- Improves reliability and simplifies wiring
Sealed Design for Harsh Environments
Designed to withstand the conditions of performance and racing applications, this relay features a sealed construction to protect against moisture, dirt, and vibration.
- Sealed housing for durability
- Resistant to moisture and contaminants
- Reliable operation in harsh engine bay conditions
- Ideal for street and race vehicles
Electrical Connections
- 85 - Trigger - FT auxiliary output (activated when switched to ground)
- 86 - Switched 12V
- 30 - Battery 12V
- 87 - Output for load - Normally open contact - 40A
Features
- 40A sealed relay with built-in fuse
- Designed for ECU, injector, and coil circuits
- Integrated circuit protection
- Durable construction for motorsports use
- Ideal for custom harness and wiring projects
Quick Specs
- Brand: FuelTech
- Product Type: Relay with Built-In Fuse
- Current Rating: 40A
- Function: Power distribution and circuit control
- Design: Sealed relay
- Application: ECU, injectors, coils, and accessories
- Part Number: 3020100310
FAQs
What is this relay used for?
This relay is used to control high-current circuits such as ECUs, injectors, and ignition coils in custom wiring setups.
Do I need multiple relays for my build?
Yes, typically one relay is required per component or circuit you are powering to ensure proper load management and protection.
Why Buy from Beefcake Racing?
Beefcake Racing is your trusted source for FuelTech wiring components, sensors, and performance electronics. We help builders create reliable, professional-grade electrical systems.
From simple wiring upgrades to full standalone ECU harnesses, we provide expert support, fast shipping, and real-world experience to help you get the job done right.
Email: sales@beefcakeracing.com
Phone: 1-855-827-7223
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov

