AllSpark Input Module – Compatible with Bussmann LMI “Little Block”

The AllSpark Input Module forms the foundation of a modular, heavy-duty DC fuse block system designed for safe and efficient power distribution. Engineered to be 100% compatible with the Bussmann LMI “Little Block”, this input module connects directly to your main battery feed and distributes power via an AllSpark modular busbar to multiple Midi/AMI fused circuits.

This listing includes:
• 1 × AllSpark Input Module with nut
Note: Fuse holders, fuses, and busbars are sold separately.

Build Your Own Customisable Fuse Block

Designed for flexibility, the AllSpark system allows you to purchase only the components you need:

• AllSpark Input Module (this listing)

• AllSpark Midi Fuse Holders – connect 2 to 6 output circuits

• AllSpark Modular Busbars – available in 3 to 7-hole configurations

• AllSpark Midi/AMI Fuses – available in 30A to 200A ratings

The input module features a single 5/16” (M8) stud for incoming battery cable connection. Add 2 to 6 AllSpark Fuse Holders using the modular clip-together system and connect them via the busbar. Best practice is to install the input module in the centre of the block, placing high-current circuits closest to the input for minimal resistance and maximum efficiency.

System Configuration Example:

• 1 × Input Module (main power in)

• 2–6 × Fuse Holders (one per circuit)

• 1 × Busbar (1 hole for input + 1 hole per fuse holder)

• 2–6 × Midi/AMI Fuses

Or use fuse holders standalone if you prefer individual, inline circuit protection without a busbar or input module.

Key Features:

• 100% compatible with Bussmann LMI systems

• High-current 5/16” (M8) stud for main battery feed

• Modular design for compact, professional setups

• Total system current handling up to 400A

• Use with AllSpark Fuse Holders (200A max per circuit)

• Designed for industry-standard Midi/AMI fuses

• Tough, reliable, and ready for demanding off-grid and vehicle environments

Applications Include:

• Dual Battery Systems

• Inverter Installations

• DC-DC Chargers

• Caravan & 4WD Solar Systems

• Marine & Boat Power Distribution

• Agricultural & Commercial Vehicles

• Heavy Transport, Bus, and Specialty Builds

Midi/AMI fuses are available separately in 30A, 40A, 50A, 60A, 70A, 80A, 100A, 125A, 175A, and 200A sizes [available here].

This listing includes the following:

• 1 x Input Module with nut 

*** THIS LISTING/KIT DOES NOT INCLUDE FUSE HOLDERS OR FUSES - They are purchased separately here ***