Blue Sea 7721 MEGA® / AMG® Safety Fuse Block


Ignition and ingress protected to provide in-line fusing for a single circuit up to 300A.

  • Ignition protected for installation aboard gasoline or diesel powered boats
  • Sealed cover protects fuses from the harsh marine environment
  • Insulating cover satisfies ABYC/USCG insulation requirements
  • Cover breakouts allow wire access in any direction
  • 300A maximum with 4/0 cable
  • Accepts Blue Sea Systems Square Format standard or custom label
  • Fuses sold separately
Weight 0.15 lbs
Dimensions 5.12 × 1.51 × 1.5 in

Blue Sea Systems

Component Type

Fuse Block

Fuse Type


System Voltage

12V, 24V


There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.

Scroll to Top