Arlington 3838A Duplex Mc Cable Connector 1/2 Inch

Product Description

The ARLINGTON 3838A is a duplex zinc die-cast MC cable connector designed for fast, tool-free installation at 1/2 inch knockouts. An internal spring steel clip snaps the connector securely onto the MC cable, and a locknut then secures it into the knockout opening without requiring any additional tools. The insulated throat protects cable insulation from abrasion at the point of entry. When taped, the connector achieves a concrete-tight seal. This connector is installed by licensed electricians during rough-in or retrofit electrical work in both residential and commercial applications.

This connector is suited for use wherever MC cable terminates at a panel, junction box, or enclosure with a standard 1/2 inch knockout. The duplex configuration allows two MC cables to be terminated through a single knockout, reducing the number of knockouts used and simplifying box fill management. It is well-suited for residential panel work, commercial retrofit installations, and any application where speed of installation is a priority on the job site.

Key Features

• Tool-free snap installation using an internal spring steel clip — no screwdriver or wrench needed to attach to cable
• Duplex design terminates two MC cables through a single 1/2 inch knockout
• Zinc die-cast construction for durability and mechanical strength
• Secures into knockout with standard locknut for a firm, code-compliant connection
• Concrete-tight seal when taped, suitable for protected concrete installations
• Insulated throat prevents cable insulation damage at the connector entry point

Compatibility

Designed as an OEM-style replacement and standard-fit connector for enclosures and boxes with 1/2 inch trade-size knockouts accepting MC cable terminations.

Installation Notes

Installation is performed by a licensed electrician. De-energize and lock out the panel or enclosure before beginning termination work, following NFPA 70 (NEC) lockout/tagout procedures. Snap the connector onto the MC cable sheath until the internal clip engages, then insert through the knockout and thread the locknut to secure. If a concrete-tight rating is required, tape the connector after seating per the manufacturer guidance.

Technical Specifications

• Knockout Size: 1/2 inch
• Configuration: Duplex (two cables per connector)
• Material: Zinc die-cast
• Clip Material: Spring steel
• Throat: Insulated
• Seal Rating: Concrete-tight when taped
• UPC: 018997362001

Standard Information

• Brand: ARLINGTON
• Manufacturer Part Number: 3838A