Arlington Industries 387A 3/4 Inch Snap-in Connector

Product Description

The ARLINGTON INDUSTRIES 387A is a snap-in connector designed for use with 3/4 inch knockouts in electrical enclosures, junction boxes, and panel boxes. It provides a secure, tool-free connection point for conduit or cable entry, securing wiring in place while protecting against abrasion at the knockout edge. Licensed electricians and electrical contractors install this type of fitting during rough-in and finish electrical work. The snap-in design allows for fast, single-handed installation without threading or hardware, reducing labor time on repetitive box-fill tasks.

The 387A is suited for residential and light commercial electrical installations where 3/4 inch knockout openings are standard. Common applications include breaker panels, junction boxes, outlet boxes, and enclosures requiring a clean, code-compliant cable or conduit entry point. This connector is typically used in new construction and retrofit wiring projects where speed and reliability at the knockout are priorities.

Key Features

• Snap-in installation into 3/4 inch knockouts requires no tools or additional hardware
• Secures conduit or cable entry and protects wiring from abrasion at the knockout edge
• Compact, single-unit form factor suited for high-volume installations
• Sold individually for precise quantity purchasing

Compatibility

Designed as an OEM-style replacement and standard-fit connector for electrical enclosures and boxes with 3/4 inch knockout openings.

Installation Notes

Installation is performed by licensed electricians in accordance with applicable NEC requirements. De-energize the panel or enclosure and verify the circuit is dead before beginning work. Align the connector with the 3/4 inch knockout and press firmly until the retaining tabs seat securely. Do not force the connector into knockouts of a different size, as improper fit can compromise the installation.