50A AMI / MIDI High-Current Bolt-Down Fuse

Dependable 50 Amp Circuit Protection for DC-DC Chargers & Auxiliary Circuits

Engineered to protect medium-draw DC electrical circuits from short circuits and current overloads, the 50A AMI / MIDI Bolt-Down Fuse delivers reliable, space-saving circuit protection. Perfectly rated for 20A–25A DC-DC battery chargers, 250W–300W inverters, auxiliary power distribution panels, and dual-battery sub-feeds, this 50 Amp fuse handles continuous loads while preventing false trips.

Featuring tin-plated copper alloy contact blades, it maintains high conductivity with minimal voltage drop. The M5 bolt-down eyelet design guarantees a rock-solid, vibration-resistant connection that won't loosen, arc, or overheat—making it an essential protective device for 4WD touring, caravan, camper trailer, and marine electrical setups.

Key Features

• 50 Amp Continuous Protection: Perfectly sized for protecting 20A/25A DC-DC battery chargers, small inverters, and heavy accessory feed lines.

• Slow-Blow Time-Delay Element: Engineered to tolerate temporary inrush startup currents without nuisance blowing when initiating loads.

• Vibration-Proof M5 Bolt-Down Mounting: Secures firmly onto M5 studs to eliminate loose contacts and resistive heating caused by off-road vibration.

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

• Clear Visual Inspection: Stamped 50A rating and transparent housing window allow for instant visual diagnostic checks inside fuse holders.

Technical Specifications

Applications

• 20A and 25A DC-DC battery chargers and solar regulators

• 250W to 300W pure sine wave power inverters

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

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