Egis 3912 Class-T Sealed Fuse Block 225-400A 80V
Egis 3912 Class-T Sealed Fuse Block 225-400A 80V — Product description
The Egis Mobile 3912 is a sealed Class-T fuse block for the high-amperage DC circuits on your boat, from lithium battery mains to big inverters. It takes a single 225 to 400 amp Class-T fuse, handles up to 80 volts DC, and carries IP66, IP67, and IP6K9K sealing so spray and washdowns won't touch the connection.
The Egis Mobile 3912 is a sealed Class-T fuse block built for the high-current DC circuits you'll find on a modern boat. Think lithium battery banks, big inverters, bow thrusters, anything pulling serious amperage off the bank. It takes a single Class-T fuse rated from 225 to 400 amps and handles up to 80 volts DC, so it covers 12, 24, and 48 volt systems without a problem.
What makes this one worth the money is the sealing. The whole block carries IP66, IP67, and IP6K9K ratings, which means it shrugs off spray, washdowns, and the odd bilge soaking. The housing is glass-filled nylon and the busbar is tin-plated copper, so corrosion isn't going to creep in and cook your connection over a season. A clear polycarbonate cover snaps over the top to keep fingers and stray tools off a live terminal, and the stainless steel hardware self-locks so it won't back out with vibration.
If you're fusing a main battery feed and you want it done right, this is the kind of block you install once and forget about.
Key Features
- 80V DC rating with a 225 to 400 amp Class-T fuse window, sized for lithium banks, inverters, and main battery feeds
- IP66, IP67, and IP6K9K sealing keeps spray, washdowns, and bilge moisture out of the connection
- Glass-filled nylon housing and tin-plated copper busbar resist corrosion for long service life
- Clear polycarbonate cover protects the live terminal from fingers and stray tools
- Stainless steel self-locking hardware won't back out under engine and road vibration
Why Buy from NVN Marine
- Authorized Egis Mobile reseller, full manufacturer warranty
- NMEA member and ABYC certified, advice from real boat techs
- Same-day shipping before 3 PM ET on in-stock items
- NY headquarters and Fort Lauderdale flagship retail store
Technical specifications
| Title | 80 Volt DC/ 225 To 400 Amp; Class-T Sealed Fuse Block; Glass-Filled Nylon Housing; Tin-Plated Copper Busbar; IP66/ IP67/ IP6K9K Protection Rating; With Polycarbonate Protective Transparent Cover And Stainless Steel Self-Locking Hardware |
|---|---|
| Brand | Egis Mobile |
| Manufacturer Part Number | 3912 |
| UPC | 850067590729 |
| Voltage Rating | 80V DC |
| Amperage Range | 225 to 400 Amp |
| Fuse Type | Class-T |
| Housing Material | Glass-Filled Nylon |
| Busbar Material | Tin-Plated Copper |
| Protection Rating | IP66 / IP67 / IP6K9K |
| Cover | Polycarbonate Transparent Protective Cover |
| Hardware | Stainless Steel Self-Locking |
Frequently asked questions
What fuse does the Egis 3912 use?
It takes a single Class-T fuse rated between 225 and 400 amps. Class-T fuses are the standard choice for high-current DC mains because of their high interrupt rating.
What voltage can it handle?
It's rated for 80 volts DC, so it's at home on 12, 24, and 48 volt systems.
Is this fuse block waterproof?
It carries IP66, IP67, and IP6K9K protection ratings, so it stands up to heavy spray, temporary immersion, and pressure washdowns.
What's the busbar made of?
Tin-plated copper, which keeps resistance low and fights corrosion in a salt-air environment.
Does it come with a cover?
Yes. A clear polycarbonate cover is included to shield the live terminal, and the mounting hardware is self-locking stainless steel.
