GFEV‑B300EH 1‑Way Mega & 4‑Way Midi Fuse Block | 5‑Way Automotive Fuse Box |EssFuse
GFEV‑B300EH 5‑way automotive fuse box:1‑way MEGA main circuit 30‑650A 12‑80V M8,4‑way MIDI branch circuit 30‑200A 12‑58V M5. PA66 housing for automobiles, RVs, EVs, control boxes and modified vehicles.
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Over 20 years in electrical protection and fuse manufacturing.
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GFEV‑B300EH 1‑Way Mega & 4‑Way Midi Fuse Block
Product Overview
The GFEV‑B300EH acts as a 5‑way modular automotive fuse block developed by EssFuse. First of all, it combines one MEGA main‑circuit position together with four MIDI branch‑circuit positions inside one compact unit. It adopts high‑quality PA66 housing plus heavy‑duty brass terminals. Therefore, this power distribution module delivers stable overcurrent and short‑circuit protection for automobiles, RVs, electric vehicles, control boxes and modified vehicles.
Furthermore, the main circuit supports MEGA bolt‑down fuses with M8 studs, while four branch circuits fit MIDI bolt‑down fuses with M5 studs. This mixed‑design block separates high‑current main input and multi‑channel branch outputs. As a result, it works well for vehicle power refit, dual‑battery systems and on‑board control cabinet wiring.
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 |
Note: Please select proper MEGA / MIDI fuse ampere rating based on your actual system load condition.
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 offers good mechanical strength and insulation performance for automotive installation.
- Solid brass terminals keep low contact resistance and guarantee stable large‑current operation.
- Modular compact structure, saves installation space inside vehicle cabins and control boxes.
- Supports separate protection for main power loop and multiple branch circuits for modified‑car projects.
Application Scenarios
- Passenger automobiles, modified vehicles, 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
FAQ
1: What fuses match GFEV‑B300EH?
A: The main circuit works with MEGA bolt‑down fuses (M8 stud). On the other hand, four branch circuits are designed for MIDI bolt‑down fuses (M5 stud. Compatible fuses can be found at EssFuse bolt‑down fuses category.
2: Can I install this fuse block inside the engine bay?
A: It uses PA66 durable housing for engine‑bay installation. Nevertheless, you should add extra waterproof housing if you expect long‑term direct water splash.
3: How do I choose correct fuse amp values?
A: The main‑circuit MEGA fuse must be higher than total load current. For this reason, each MIDI branch fuse should correspond to its individual branch load current.
4: Do you accept custom modification for GFEV‑B300EH?
A: Custom service is available. In fact, we support terminal adjustment, mounting‑hole modification and sample prototyping according to your drawing requirements.
5: 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.
6: What is housing material?
A: The shell adopts PA66 engineering plastic, it meets general automotive mechanical and insulation requirements.

