Egis 2220-06 6-Circuit 20A Marine Terminal Block

The Egis Mobile Electric 2220-06 is a six-circuit terminal block built to take one incoming feed and split it cleanly into separate, screw-terminated pairs. If you've ever tried to daisy-chain a handful of accessories off a single stud and ended up with a bird's nest of ring terminals, this is the fix. Each of the six pairs gives you one input screw and one output screw, landed on their own copper alloy bus bar, so every circuit stays independent.

What makes it worth putting on a boat instead of a generic hardware-store block is the material choice. The conductors are tin-plated copper alloy. That tin plating is the part that matters out on the water, because bare copper corrodes fast in salt air and damp bilge spaces, and corroded copper means voltage drop, heat, and eventually a connection that quits on you. The hardware is stainless steel, and the insulation body is a high-temperature material that won't soften or distort when a circuit runs warm. It's the kind of build that holds up season after season in a console or a battery compartment.

Electrically, each circuit is rated for 20 amps continuous at up to 240 volts AC or DC. That range covers a lot of ground. It'll support 12, 24, 36, and 48 volt DC systems, and it handles 120 and 240 volt AC applications too, so the same block works whether you're distributing house-bank DC loads or wiring in shore-power accessories. Dielectric strength is rated at 2000 Vac, which is the block's ability to resist arcing between adjacent circuits under load.

Egis paid attention to the details that cause headaches on real installs. There are anti-rotation ribs on the conductor strips, so if you've got a long strain-relief run and the wire wants to twist, the ring terminal stays put instead of spinning loose. The insulation walls between pairs are tall enough to keep a ring terminal splice from shorting across to the neighbor circuit or to ground, which is the failure you don't want to chase down offshore.

Where does it earn its keep? Think of any spot where you've got several 12-volt loads that all need a common feed. Nav lights, a bilge pump, a livewell pump, a stereo, a chartplotter accessory circuit. Run your positive feed to the input side, ground to the negative side, and land each accessory on its own pair. Now every circuit is labeled, isolated, and easy to service. When you need to troubleshoot one device, you're pulling one screw, not unwinding the whole harness. It's the difference between a five-minute fix and an afternoon lost chasing a fault with a multimeter, and it's the difference the next owner notices too when they open the panel and find every run traced to its own labeled pair.

A quick note on wiring it up right. Match your wire gauge to the load, not just to what fits the screw, and use adhesive-lined heat-shrink ring terminals for the cleanest, most water-resistant connection. Keep like circuits grouped so the panel makes sense to the next person who opens it up, even if that person is you a few seasons from now.

The block itself is compact at 2.92 inches long by 0.86 inches wide, so it tucks into tight console spaces and small electrical panels without hogging real estate. You'll want to size your ring terminals to the screws and torque them down properly, and it's smart to keep the whole assembly out of standing water even though the materials are corrosion-resistant. Egis backs it with a four-year warranty, which tells you what they think of it. For anybody cleaning up a messy DC distribution setup or building a new panel from scratch, this is a straightforward, dependable piece to build around.