Egis Mobile Electric 3439 MT Series 3+9 Sealed Fuse Block with Ground Busbar

The Egis Mobile Electric MT Series 3+9 Sealed Fuse Block (MPN 3439) is a heavy-duty, weatherproof power distribution solution designed for demanding marine, RV, overland, and powersports electrical systems. Featuring a split 3+9 circuit configuration, this fuse block allows two separate input sources to feed independent circuit groups — ideal for dual-battery or split-load setups.

Built around industry-standard Deutsch/Amphenol output connectors, the MT Series delivers a plug-and-play installation experience that significantly reduces the assembly failures common with traditional screw terminations. Each circuit is individually protected against accidental short circuits to frame ground or battery negative, as well as overload events, safeguarding add-on accessories and wiring.

Key Features:

• Split 3+9 Circuit Configuration — dual input groups for flexible power distribution across separate circuit loads
• Integrated Deutsch/Amphenol Output Connectors — harsh-environment industry standard for reliable, weatherproof connections
• Sealed to IP66 & IP6K9K — protected against high-pressure water jets, dust, and contaminants for installation anywhere on the vessel or vehicle
• Ignition Protected per SAE J1171 — safe for installation in engine bays and other potentially hazardous environments
• Flex System Compatible — expandable with dual, triple, and quad link interconnect busbars for modular, plug-and-play system growth
• Supports ATM/MINI Fuses and Circuit Breakers — compatible with Type 1 or Type 3 MINI/ATM circuit breakers
• Stainless Steel Self-Locking Hardware — ensures robust, long-term connection reliability in high-vibration environments
• Glass-Filled Nylon Construction — high-temperature, bullet-proof housing for maximum durability in demanding conditions
• Integrated Ground Busbar — provides a common ground return for all circuits in a single, organized termination point

The MT Series 3+9 fuse block is part of Egis Mobile Electric's modular Flex System ecosystem, allowing it to be linked with other MT Series blocks, MIDI/AMI fuse holders, and XD Series relays via optional interconnect busbars. Note: Fuses and circuit breakers are sold separately.