Blue Sea Systems 5133B, is an ANL fuse - 300 Amp.
Features: p>- Ignition protected (conforms to SAE J1171) - safe for installation aboard gasoline powered boats (35-500 Amp only)
- Silver plated clutch blades for corrosion resistance
- Visible indication of burst condition
- 6,000 Ampere Interrupt Capacity (AIC) meets ABYC requirements for main DC circuit protection on large battery banks
- For use with Blue Sea Systems ANL fuse blocks