94 CIRCUIT PROTECTION bluesea.com Related Products MEGA®/AMG® Safety Fuse Block Ignition protected for use on gasoline powered boats with 30A to 300A circuits • Sealed cover protects fuses from a harsh environment and satisfies ABYC/USCG insulation requirements • Cover breakouts allow wire access in three directions • One-piece stainless flange nuts ensure safe and secure connections • Accepts square format standard or custom label • Fuses sold separately (page 83) Specifications Voltage Max. Operating 32V DC Wire Size to Meet Rating 2/0 AWG (70 mm²) Mounting holes Accept 1 ⁄ 4 " (M6) Screws Terminal Stud Size M8 Regulatory Emarked Meets ISO 8846 and SAE J1171 external ignition protection requirements when cover is secure IP66 – protected against powerful water jets (see inside back cover) Part# Fuse Type Amps Max. Operating 7721 MEGA or AMG 300A MEGA or AMG Fuses page 83 • Sealed cover protects fuses from a harsh environment and satisfies ABYC/USCG insulation requirements • Cover breakouts allow wire access in three directions • One-piece stainless flange nuts ensure safe and secure connections • Accepts square format standard or custom label • Fuses sold separately (page 83) Specifications Voltage Max. Operating 32V DC Wire Size to Meet Rating 2/0 AWG (70 mm²) Mounting holes Accept 1 ⁄ 4 " (M6) Screws Terminal Stud Size M8 Terminal Screw Size M5 Stainless Steel Regulatory Emarked Meets ISO 8846 and SAE J1171 external ignition protection requirements when cover is secure IP66 – protected against powerful water jets (see inside back cover) Related Products AMI®/MIDI® Safety Fuse Block Ignition protected for use on gasoline powered boats with 30A to 200A circuits Cover accommodates a spare fuse AMI or MIDI Fuses page 83 7720 and 7721 COVER FRONT 4.92" 125mm 4.0" 101.6mm 4.2" 107.4mm .80" 20.3mm 1.51" 38.4mm 5.12" 130mm 7720 and 7721 DIMENSIONS Part# Fuse Type Amps Max. Operating 7720 AMI or MIDI 200A ABYC guidelines and Ignition Protection Blue Sea Systems fuse blocks marked ignition protected are designed and tested for ignition protection, enabling them to be installed in a compartment where gasoline or other explosive fumes may be present. Blue Sea Systems' fuse blocks that meet the U.S. Coast Guard ignition protection requirements include the MAXI, ST Blade Battery Terminal Mount, ST Blade Compact, Terminal MRBF, Class T, Safety, and SafetyHub Fuse Blocks. The U.S. Coast Guard states: An electrical component that is “ignition protected” is capable of operating in an explosive environment without igniting that environment. “Ignition protection” of electrical devices is accomplished by the use of seals, flame arrestors and potting (sealing), or a combination of such means. bluesea.com/video bluesea.com/video For the full list of specifications, see page 97
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