Blue Sea Systems 7748 Safety Hub 150 Fuse Block

Up to Four 30A-200A MIDI/AMI fuses (sold separately) make it ideal for high-amp circuits including panel feeds, windlasses, and stereo amplifiers
Six 24-hour 1A-30A ATO/ATC fuses (sold separately) are ideal for circuits including bilge pumps, alarms, and clock memory
Ignition protected fuse block meets Coast Guard and ABYC requirements for installation on gasoline or diesel boats. Cover must be kept closed to meet the rating.
Meets ISO 8846 ignition protection, and SAE J1171 external ignition protection requirements
Approx dimensions 6" x 5"
Fuses sold separately
Certifications: CE. IP66, SAE J1171, ISO 8846 Marine

Safety Prep: Disconnect the negative battery terminal before starting.
Mounting: Place in a dry location, ideally near the battery, using the integrated mounting holes.
Main Power: Connect the main feed to the M8 studs using 4/0 AWG cable (for full 280A max combined load).
High-Amp Fuses (4x): Use M5 screws to secure MIDI® or AMI® fuses (30A–200A) for large loads like windlasses, inverters, or stereos.
Low-Amp Fuses (6x): Use #8-32 screws for ATO®/ATC® fuses (1A–30A) for accessories like bilge pumps, nav lights, and electronics.
Negative Bus: Connect load negatives to the integrated negative bus bar for centralized wiring.
Cover: The sealed cover protects against moisture, is ignition-proof for gasoline environments, and includes storage for spare fuses.
Required Accessories: Fuses and terminal screws are sold separately; consider a Blue Sea Systems SafetyHub 150 for reliable, long-term performance.

There are limits on the overall amp capacity of the block based on the size of wire you are using. This is because larger wires have the ability to dissipate more heat. The overall limit when using 2/0 wires is 200 amps for the entire block. If you use 4/0 wire the limit rises to 350 amps, and if you double up your 4/0 wire the max limit is 600 amps.