AlumiConn Wire Connectors

Aluminum-to-copper connectors from King Innovation

Choose an AlumiConn lug for compatible aluminum-to-copper, aluminum-to-aluminum or copper-to-copper connections. Each conductor occupies a separate port secured by a set screw. Compare the 2-port and 3-port connectors below by conductor count and pack quantity.

Shop smaller packs: 3-port, 2-pack · 2-port, 10-pack · 3-port, 10-pack

Choose the port count and pack size

Select the port count for the complete connection, using only one conductor per port. Pack quantity is the number of connectors supplied, not the number of conductors a connector accepts.

To compare pack value, divide the current product price by the number of connectors in the pack. Port count describes conductor capacity; it does not change how many connectors are supplied.

Manufacturer specifications

• Maximum voltage: 300V
• Aluminum conductors: #12–#10 AWG solid
• Copper conductors: #18–#10 AWG solid or stranded
• Temperature rating: 105°C
• Tin-plated lug with nickel-plated screws

Installation and application guidance

Have a qualified electrician assess the wiring and select the connector for the application. Follow King Innovation's model-specific preparation and torque instructions. Use one conductor per port; do not reuse connectors. Confirm applicable code requirements, enclosure space and the proposed repair with the local authority having jurisdiction (AHJ).

2-port AlumiConn specifications and installation instructions · 3-port AlumiConn specifications and installation instructions

For landscape wiring, browse waterproof wire connectors or landscape lighting wire. Select connectors rated for the intended environment.

AlumiConn buying questions

Should I choose a 2-port or 3-port connector?

Choose two ports for a compatible connection with two conductors, or three ports when the connection requires three. Use one conductor per port. Your electrician should determine the complete wiring arrangement and available enclosure space.

Are AlumiConn connectors wire nuts?

No. AlumiConn uses a mechanical lug with individual set-screw ports, rather than a twist-on connection. Follow the instructions for the exact AlumiConn model.

Which aluminum and copper wire sizes fit?

King Innovation specifies #12–#10 AWG solid aluminum and #18–#10 AWG solid or stranded copper for these 2-port and 3-port models.

Where can I compare aluminum wiring repair options?

Read our AlumiConn connector selection and repair-options guide for port selection, pack planning and a sourced AlumiConn versus COPALUM comparison.

Planning a renovation? Read when to use AlumiConn in house and apartment remodels for practical use cases and questions to discuss with your electrician.