Blue Sea Systems AMI/MIDI Safety Fuse Block, 200A, 32V DC, Ignition Protected
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Overview
The Blue Sea Systems 7720 is an AMI/MIDI safety fuse block for DC circuits up to 32V and fuse protection up to 200A. It is used on boats that need covered protection on higher-amperage runs, with ignition protection for installation aboard gasoline or diesel powered boats.
The sealed cover shields the fuse area from the marine environment and also satisfies ABYC/USCG insulation requirements. Wire-entry breakouts in the cover let cables approach from different directions, which helps when space is tight around batteries, busbars, or distribution points. This block uses M8 x 1.25 studs, accepts Blue Sea Systems Square Format labels, and the required fuse is sold separately.
Key features
- Accepts AMI and MIDI fuse formats for single-circuit DC protection
- Rated for systems up to 32V DC and fuse protection up to 200A
- Ignition protected for installation aboard gasoline or diesel powered boats
- Sealed insulating cover satisfies ABYC/USCG insulation requirements
- Cover breakouts allow wire access from any direction
- M8 x 1.25 terminal studs fit 5/16 in ring terminals
- Accepts Blue Sea Systems Square Format labels for circuit identification
- Fuse sold separately
Installation and fit
Before ordering, check that your system uses the AMI or MIDI fuse pattern and that your cable terminals match the M8 stud size. Leave enough room around the block for the cover to open and for the cable bend radius, especially when it is mounted close to a battery switch or power distribution hardware.
This fuse block fits installs where one protected feed needs a covered holder rather than an exposed connection. It works for main or branch DC protection in refits, battery-bank upgrades, and new distribution layouts where service access and clear labeling matter.
Compatibility and use on board
This is a good fit for boat owners and installers who want a compact fuse block with a protected top in engine spaces, battery compartments, or other areas that see moisture, vibration, and regular maintenance access. It also makes sense when the rest of the electrical system is already built around AMI or MIDI fuses and a single protected circuit needs a cleaner mounting point.
Shipping
We ship worldwide from the United States. Rates are calculated at checkout based on destination and package weight. Some items include free shipping, which will show automatically. Not every product is eligible for international shipping; checkout will confirm eligibility. We do not ship to PO Boxes except through USPS, and not all packages qualify.
Processing and dispatch
Most orders are verified, packed, and handed to the carrier within 1 to 2 business days. Some products may need extra handling time or ship directly from the manufacturer. For certain international orders, inventory transfers between warehouses may add time. If any delay is expected, we will let you know the dispatch date.
Delivery and tracking
Deliveries are handled by trusted carriers such as USPS, UPS, FedEx, and DHL. Estimated arrival times appear at checkout and depend on your location and the service you choose. These are estimates and can be affected by customs or carrier disruptions. A shipping confirmation with a tracking link is emailed when your order ships, and tracking may take up to 24 hours to update. You can also view tracking in your account.
Duties, taxes, and support
International customers are responsible for any customs duties, taxes, and fees charged by the destination country. If these charges are refused and a shipment returns to us, the carrier’s return cost and any re-entry customs fees will be deducted from the refund. If your order is late or you need help, contact cs@qualityboatparts.com and we will assist you.
Quality Boat Parts is a reseller. Many items include a manufacturer’s warranty, and all warranty service is handled directly by the manufacturer. We do not manage or administer warranty claims on behalf of customers.
Warranty terms, coverage, and duration are set by each manufacturer. Issues involving defects, repairs, or replacements must be addressed with the manufacturer’s support team. When available, the warranty period is listed on the product page. If it is not shown, contact us or the manufacturer for details before purchasing.
To start a claim, the customer must contact the manufacturer and follow their process. Keep your proof of purchase and original packaging, and register the product if the manufacturer requires it, as these are often needed for warranty service.
We are happy to help you find the right contact or documentation, but we cannot decide outcomes or intervene in claim resolutions. For guidance, email cs@qualityboatparts.com.