Egis 2220-02 2-Circuit 20A Terminal Block

The Egis Mobile Electric 2220-02 is a two-circuit terminal block built for the kind of wiring work that has to hold up on a boat. It gives you two matched screw-terminal pairs, each with one input screw and one output screw landing on its own tin-plated copper alloy bus bar. Small footprint, honest construction, and a rating that covers most low-voltage DC accessory runs and plenty of AC work too.

If you've ever chased down a corroded connection behind a console, you already know why the materials matter here. The conductors are tin-plated copper alloy, the hardware is stainless steel, and the body is a high-temperature insulation material. Tinning is what keeps copper from going green and chalky in a damp bilge or a splash-prone helm, so the connection you make today still reads clean a few seasons down the line. That's the whole point of marine-grade parts, and it's why we stock this line for rigging jobs that live near saltwater.

Electrically, the 2220-02 carries 20 amps of continuous current and tops out at 240 volts AC or DC. It's rated 125 volts per circuit, which means it comfortably supports 12, 24, 36, and 48 Vdc systems, along with 120 and 240 Vac applications. Dielectric strength is 2000 Vac. For most of us that translates to a dependable spot to land pumps, lighting circuits, electronics power, or a small accessory bus without worrying about the block being the weak link.

Two design details earn their keep during install. Anti-rotation ribs on the conductor strips keep the terminal from spinning when your strain-relief run is long and the wire wants to twist as you torque it down. And the high insulation walls between pairs keep ring-terminal splices from shorting across to the neighbor circuit or to ground. Little things, but they're the difference between a clean job and a callback.

Wiring it is straightforward. Each circuit is a pair: one screw for the feed coming in, one screw for the load going out, each landing on a separate copper alloy bus bar. Strip, crimp a ring terminal, set it under the screw, and torque. Because every pair is independent, you can run two separate circuits through one compact block instead of splicing them loose behind the dash.

One more thing worth saying about screw-terminal blocks in general. They're easy to service. When you're chasing a fault a year from now, you can back out a single screw, check the connection, and re-land it without cutting and re-crimping the whole run. Loose heat-shrink splices don't give you that. On a boat, where vibration and moisture are always working against your wiring, a block you can open up and inspect is worth the few extra minutes it takes to install one. Keep the screws snug, give them a look at the start of each season, and this block will outlast most of the gear hanging off it.

Where does it fit best? Think smaller accessory jobs. A bilge pump and a livewell pump. A pair of lighting circuits. Nav electronics feed and a secondary switch leg. Anywhere you need a tidy, serviceable junction for two circuits and you don't want to give up a lot of panel real estate. At 1.43 inches long and 0.86 inches wide, it tucks into tight rigging spaces where a larger block won't go. If you need more circuits, the same family runs up through 4, 6, 8, 10, and 12 matching pairs, so you can keep the look and the hardware consistent across a whole rewire.

It's backed by a 4-year warranty, which tells you how Egis feels about the construction. For a part this size and price, it's a sensible upgrade over a loose butt-splice or a hardware-store block that isn't built for the marine environment. Buy it once, wire it clean, and forget about it.