Mega Fuse Holder & 4 Way Midi Fuse Block | Automotive Fuse Box
GFEV‑B300EH 1‑Way Mega & 4‑Way Midi Fuse Block,5‑way automotive fuse box with PA66 housing and brass terminals for auto,RV,EV power distribution.
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GFEV‑B300EH 1‑way mega & 4‑way midi fuse block is a 5‑way modular automotive fuse block developed by GFEV. It integrates one MEGA main‑circuit position and four MIDI branch‑circuit positions inside one compact unit. Constructed with high‑quality PA66 housing and heavy‑duty brass terminals, this power distribution module provides stable over‑current and short‑circuit protection for automobiles, RVs, electric vehicles, control boxes and modified vehicles. The main circuit adopts M8 studs for MEGA bolt‑down fuses, while four branch circuits use M5 studs for MIDI bolt‑down fuses. This mixed‑circuit design separates high‑current main input and multi‑channel branch outputs, ideal for vehicle power refit, dual‑battery systems and on‑board control cabinet wiring.
Core Features
- Mixed‑circuit layout: 1 MEGA high‑current main input plus 4 MIDI branch outputs within single housing
- Bolt‑on M8 & M5 stud construction, anti‑vibration performance adapts to vehicle vibration environment
- PA66 robust housing delivers excellent mechanical strength and insulation performance for automotive installation
- Solid brass terminals maintain low contact resistance and guarantee stable large‑current operation
- Modular compact structure, saves installation space inside vehicle cabins and control boxes
- Realize independent protection for main power loop and multiple branch circuits for modified‑car projects
- Note: Please select proper MEGA / MIDI fuse ampere rating based on your actual system load condition.
Key Specifications
| Item | Parameter |
|---|---|
| Model | GFEV‑B300EH |
| Total Ways | 5‑Way (1×MEGA Main + 4×MIDI Branch) |
| Main Circuit (MEGA Fuse) | 30A‑650A,12V‑80V DC, M8 Stud |
| Branch Circuit (MIDI Fuse) | 30A‑200A,12V‑58V DC, M5 Stud |
| Housing Material | PA66 Engineering Plastic |
| Conductive Terminal | Brass Terminals |
| Compatible Fuse Type | MEGA Bolt‑Down Fuse, MIDI Bolt‑Down Fuse |
| Typical Application | Automobiles, RVs, EVs, Control Boxes, Modified Vehicles |
Application Scenarios
- Passenger automobiles, modified vehicles and high‑power audio refit projects
- RV, camper, caravan and dual‑battery power distribution systems
- Electric vehicles and hybrid vehicle auxiliary circuit protection
- On‑board electrical control boxes and mobile equipment power units
- Off‑road vehicles, light commercial vehicle DC circuit protection
Match this gfev‑b300eh fuse block with our MEGA & MIDI bolt‑down fuses to complete main‑branch mixed power‑distribution protection solution.
Installation & Safety Instructions
- Disconnect vehicle main DC power supply before fuse installation or replacement to prevent short‑circuit risk.
- Follow recommended tightening torque for M5 / M8 studs; over‑torque may crack PA66 housing or damage screw threads.
- Select MEGA main‑circuit fuse with ampere rating higher than total system load current.
- Each MIDI branch fuse shall match actual load current of its corresponding branch loop.
- For engine‑bay installation, add extra waterproof housing if exposed to long‑term water splash environment.
- Regularly check stud tightness for vibration‑intensive vehicle working conditions.
- Custom modification is available for terminal adjustment, mounting‑hole modification and sample prototyping per customer drawing.
FAQ
Q: What fuses match GFEV‑B300EH?
A: The main circuit works with MEGA bolt‑down fuses (M8 stud). Four branch circuits are designed for MIDI bolt‑down fuses (M5 stud). Compatible fuses can be found at bolt‑down fuses category page.
Q: Can I install this fuse block inside the engine bay?
A: It uses PA66 durable housing suitable for engine‑bay installation. Nevertheless, you should add extra waterproof housing if you expect long‑term direct water splash.
Q: How do I choose correct fuse amp values?
A: The main‑circuit MEGA fuse must be higher than total load current. Each MIDI branch fuse should correspond to its individual branch load current.
Q: Do you accept custom modification for GFEV‑B300EH?
A: Custom service is available. We support terminal adjustment, mounting‑hole modification and sample prototyping according to your drawing requirements.
Q: What torque should I apply for M5 and M8 studs?
A: Please control tightening torque reasonably. Avoid over‑torque, otherwise you may crack PA66 housing or damage screw threads.
Q: What is housing material?
A: The shell adopts PA66 engineering plastic, it meets general automotive mechanical and insulation requirements.
Request Quotation & Technical Support
Please tell us quantity, installation environment and whether custom modification is required. Our engineering team can provide dimension drawing, bulk‑price quotation and component‑selection guidance for your mixed main‑branch vehicle power‑distribution projects.
