Blackburn AMTS350103 AL MULTI SAMESIDE CONN 3PORT 350-10

The AMTS350103 is built for conductors from 350 kcmil down to 10 AWG, which is what the "350-10" in the model designation refers to. All three ports share that same range, so you can run a 350 kcmil main and tap smaller branch conductors from the same block.

The AMTS350103 body is aluminum, and Blackburn's aluminum tap connectors of this style are dual-rated for aluminum or copper conductors. Use the appropriate joint compound for aluminum runs and torque each port set screw to the value marked on the connector body.

Yes. It carries a 600 V rating with a 90 degrees C conductor temperature rating, which covers THHN/THWN-2 service, feeder and branch circuits in commercial panels, gutters and pull boxes.

The AMTS350103 is covered under UL file E9809 and CSA file 6591, so it will satisfy an inspector looking for a listed mechanical tap connector. It is manufactured in the United States.

Same side means all three ports enter from one face of the block rather than opposing ends. That lets you land the main and both taps from the same direction, which is how you keep conductors organized in a wireway or gutter where everything comes in from one side. If your conductors approach from opposite directions, you want an opposite-side or dual-side version instead.

Three. It is a 3-port block, so one main plus two taps, or three separate conductors if you are using it as a splice point. Each port takes one conductor within the 350 kcmil to 10 AWG range. Need more taps and you move up to a 4- or 6-port block.

This is a bare mechanical tap block, not a pre-insulated one, so it has to be either installed inside an enclosure where the live parts are guarded or covered with a separate insulating cover or tape kit. Plan for that when you spec it, since the cover is not part of the connector.

Sold each. One connector per unit, so order one per tap point rather than by the box.