Tuff Terrain HD Midi & Mega Fuse Block – 7 Circuit Power Distribution (2025 Design)

Take full control of your vehicle’s power system with the Tuff Terrain HD Midi & Mega 7-Circuit Fuse Block. Engineered for high-current applications and built to withstand the toughest environments, this heavy-duty power distribution solution delivers reliability, simplicity, and maximum protection in one compact unit.

Whether you're powering aftermarket accessories, running an off-grid setup, or managing complex multi-device electrical systems, this fuse block provides clean, organised, and secure power distribution without the clutter and risk of traditional wiring.

Power Distribution for Any Application

Designed to meet the demands of modern 4x4, marine, RV, and industrial installations, this fuse block is ideal for:

• Automotive & 4x4: Auxiliary lighting, compressors, winches, power systems, and high-performance audio.

• Marine: Corrosion-resistant, dependable power distribution for onboard electronics and navigation equipment.

• RVs & Campers: Manage appliances and accessory circuits with confidence.

• Off-Grid & Solar: Perfect as a central hub for independent power systems.

Built for High Current & Maximum Protection

The Tuff Terrain HD Fuse Block integrates a single MEGA fuse input feeding seven independent MIDI fuse outputs, delivering a reliable power distribution network.

Input (Mega Fuse)

• Max Current: 450A @ 12V DC

• Accepted Wire Size: 120mm² (4/0 AWG)

• Connection Hardware: M8 stainless threaded studs

Outputs (7 × Midi Fuse Circuits)

• Fuse Rating: 30A – 200A per circuit

• Accepted Wire Size: 35mm² (2 AWG)

• Connection Hardware: M6 stainless threaded studs

This configuration ensures strong, vibration-resistant electrical connections while providing overcurrent protection for every branch circuit.

Premium Materials & Easy Installation

Crafted from high-temperature nylon, copper busbars, and stainless steel hardware, this fuse block is built for long-term durability in harsh conditions. The compact layout and clear terminal arrangement make installation straightforward across a wide range of applications.

Specifications