Blue Sea 5119 300A Class T Fuse

Blue Sea 5119 — 300A Class T Fuse (A3T)

The actual replacement fuse for a Class T fuse block. 300A-rated for 2000W-3000W inverter installations.

Key Features

• 300A continuous rating — sized for 2500W-3000W inverters at 12V
• Class T fuse class — fastest-acting high-current fuse available
• A3T form factor — fits Blue Sea 5502100 and other Class T blocks
• 200,000 AIC (Amp Interrupting Capacity) — highest in the industry

When You Need This

If you installed the Blue Sea 5502100 Class T block on your inverter install, you also need to put an actual fuse in it. The 300A size matches a 2500-3000W inverter at 12V (e.g., Victron Phoenix 12/1200, Renogy 3000W, MultiPlus 12/2000).

Pairs Well With

• Blue Sea 5502100 Class T Fuse Block (pair with the fuse)
• 2000-3000W inverters (Samlex PST-2000 / Xantrex Freedom)
• Renogy 12V 200Ah LiFePO4 Battery (common bank at this fuse rating)
• Renogy Bus Bar (distribute downstream loads)

Need help sizing or wiring? Use our Power Calculator to size your battery bank, then the System Build Helper to plan the full install.