70A AMI / MIDI High-Current Bolt-Down Fuse

Dependable 70 Amp Circuit Protection for DC-DC Chargers & Auxiliary Lines

Engineered to protect high-draw DC power circuits against dangerous overloads and short circuits, the 70A AMI / MIDI Bolt-Down Fuse offers high-performance protection in a compact footprint. Sized for 30A–40A DC-DC battery chargers, 400W–500W pure sine wave inverters, auxiliary sub-panels, and secondary battery lines, this 70 Amp fuse reliably handles continuous heavy current while preventing nuisance trips.

Featuring tin-plated copper alloy contact blades, it ensures minimal voltage drop and long-term protection against corrosion. The M5 bolt-down eyelet design guarantees a solid, vibration-resistant connection that will not loosen, arc, or overheat—making it an essential component for 4WD touring, caravan, camper trailer, and marine power systems.

Key Features

• 70 Amp Continuous Protection: Perfectly rated for protecting 30A/40A DC-DC battery chargers, 400W–500W inverters, and heavy auxiliary sub-lines.

• Slow-Blow Time-Delay Element: Built to tolerate short startup current spikes (inrush current) without false blowing when powering up equipment.

• Vibration-Proof M5 Bolt-Down Mount: Secures firmly to M5 studs to eliminate loose contacts and resistive heat buildup off-road or at sea.

• Corrosion-Resistant Terminals: Tin-plated copper blades deliver superior conductivity and protection against oxidation and humidity.

• Clear Visual Inspection: Stamped 70A rating and transparent housing window allow for instant visual diagnostic checks inside fuse holders.

Technical Specifications

Applications

• 30A and 40A DC-DC battery chargers and solar controllers

• 400W to 500W pure sine wave power inverters

• Auxiliary dual-battery power distribution lines and main battery interconnects

• Caravan, 4WD, camper trailer, and marine power systems