Sapphire Energy
MIDI Fuse Holder
MIDI Fuse Holder
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MIDI Fuse Holder
A clean, reliable way to protect a single DC circuit. This MIDI / AMI fuse holder provides a secure, serviceable connection point for branch protection in RV, marine, solar, and off-grid electrical systems.
Available in two housing styles — a slightly compact version that features a hinged lid, and a larger version with an inspection window that makes cable routing and fuse checks easier.
Type A (Hinged) is slightly smaller and ideal for tight spaces or smaller cable sizes such as 10-16 AWG. It features a hinged lid, that snaps closed.
Type B (Window) features a larger housing with a clear inspection window, and is recommended for 8 AWG and larger cable. These units can also be ganged together in groups of 2,3,4 etc using the locking tabs on the sides.
For 8 AWG or larger wiring, Type B provides easier fitment and a cleaner overall installation.
Why You’ll Love It
- Two housing options so you can match the holder to your space and cable size.
- Flexible installation — choose a compact footprint or a larger housing for easier cable routing.
- Clean, serviceable layout for simple fuse replacement and troubleshooting.
- Compact branch protection for RV, marine, van, and off-grid systems.
- Compatible with standard MIDI / AMI fuses for a wide range of circuit protection needs.
Specifications
| Fuse Type | MIDI / AMI |
| Positions | 1 (Single Fuse) |
| Available Styles | Type A (Hinged), Type B (Window) |
| Maximum Fuse Rating | Up to 200A |
| System Voltage | Up to 72V DC |
| Conductor Material | Tinned Copper |
| Base Material | Glass-Filled Nylon |
| Cover | Included |
| Mounting | Flat Surface, 2-Hole Pattern |
Type A is best suited to 10–16 AWG cable. For 8 AWG and larger, Type B is recommended for easier fitment and installation.
These holders are splash resistant but not sealed. For outdoor or marine installs, protect from spray and moisture.
Suggested Uses
- Solar and renewable systems for protecting individual DC branches.
- RVs, campers, and van builds where space-efficient fuse protection is needed.
- Marine systems for electronics, chargers, and accessory circuits.
- Golf carts and utility vehicles for compact DC protection.
- Off-grid cabins and tiny homes for inverters, heaters, lighting, and accessory loads.
Frequently Asked
What fuse type does this holder use?
This holder is designed for standard MIDI / AMI fuses. Be sure to select the correct fuse rating for your circuit. You can find matching fuses here: MIDI Fuses.
What’s the difference between Type A and Type B?
Both versions perform the same electrical function and use the same fuse type. The difference is in the housing design.
Type A (Hinged) has a smaller footprint for tight installations with a hinged lid that flips shut.
Type B (Window) has a larger housing, provides more room for heavier cable, and includes a clear window for quick visual fuse checks.
Which version should I choose for my cable size?
Type A works well with 10–16 AWG cable.
Type B is recommended for 8 AWG and larger, where the extra space makes accommodating larger crimps/ring terminals much easier.
The size challenge stems from the crimped on connectors fitting into the ends of the housing. Type A is more difficult to get the cover closed with larger cables, although it can be trimmed with a knife.
If you're unsure, Type B is the safer choice for flexibility and future upgrades.
Can this be used for an inverter?
Yes — as long as the required fuse size is within the 200A maximum rating.
However it is recommended to use a physically larger fuse/holder for currents above 100A, as cable fitment and heat may become a concern for long term loads.
For larger inverter systems or higher current applications, ANL or MEGA fuse setups are often preferred. See our ANL Fuse Holder Bundle Kit for heavy-duty options.
Is a cover included?
Yes — a protective cover is included with both styles to help prevent accidental contact and keep the install clean.
Is this holder waterproof?
No — this holder is not waterproof.
It is splash resistant, but should be installed in a dry location or inside an enclosure for outdoor or marine applications.
Where should a fuse holder be installed?
The fuse holder should be installed on the positive conductor, as close to the point of supply as practical. This is typically near the battery or busbar.
This ensures the cable is protected along its length in the event of a short circuit or fault condition.
Can I expand to more circuits later?
Yes — you can upgrade to a 2 Fuse Holder or a 4 Fuse Holder if you need additional protected circuits.
Or in the case of Type B, you can snap additional holders together and chain together with wire.
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