80A AMI / MIDI High-Current Bolt-Down Fuse

Reliable 80 Amp Circuit Protection for DC-DC Chargers & Power Sub-Panels

Engineered to safeguard auxiliary DC circuits from short circuits and severe overcurrent events, the 80A AMI / MIDI Bolt-Down Fuse provides heavy-duty protection in a compact footprint. Sized for 40A–50A DC-DC battery chargers, 500W–600W pure sine wave inverters, high-draw anchor windlasses, and secondary distribution blocks, this 80 Amp fuse ensures stable, continuous power delivery while preventing false trips.

Constructed with tin-plated copper alloy contacts, it guarantees minimal voltage drop and long-term resistance to oxidation. The M5 bolt-down design provides a firm, vibration-proof electrical connection that resists loosening, arcing, and heat buildup under demanding 4WD, marine, and caravan operating conditions.

Key Features

• 80 Amp Continuous Protection: Ideal rating for protecting 40A/50A DC-DC battery chargers, 500W–600W inverters, and heavy auxiliary sub-lines.

• Slow-Blow Time-Delay Element: Built to handle temporary startup surges (inrush current) without nuisance blowing when initiating inductive loads.

• Vibration-Proof M5 Bolt-Down Mounting: Secures tightly onto M5 studs to eliminate loose contacts caused by rough off-road terrain or engine vibration.

• Tin-Plated Copper Blades: Delivers maximum electrical conductivity while resisting corrosion in humid engine bays and marine compartments.

• Clear Amperage Markings: Stamped 80A rating and transparent housing window allow for instant visual verification during maintenance.

Technical Specifications

Applications

• 40A and 50A DC-DC battery chargers and solar controllers

• 500W to 600W pure sine wave power inverters

• Auxiliary 12V/24V power distribution sub-panels and fuse blocks

• 4WD touring setups, caravans, camper trailers, and marine power systems